I have had this projector for a while now and I am very happy with it. I have noticed that the corners are a little soft (can focus bottom corners and top are not quite as sharp), but frankly unless I am projecting small text to the corners, I don't notice it at all. It has softened up a little over time. But then I also don't have it perfectly centered either, as my ceiling is 7 foot and the screen is only about 10 inches from the ceiling.. I would say that the top of the screen is maybe 3" down from the center of the lens. Honestly I don't care, it is good enough.
My daughter has been playing GTA5 on PS3 on it for the last few days and is addicted. No problems using any source yet.
Blu-ray seems to be far brighter so I change to the custom settings that are commonly posted here, which on regular 1080i cable seem a little drab and have less "pop". I don't notice any color accuracy issues at all, but then I don't worry about it and don't use reference material to compare. I figure if you don't notice it, don't go out of your way to find out if a color is slightly off or you WILL notice it all the time. The only reason I noticed the slightly soft corners is because I read about it here and then put the menu in those corners to check, and sure enough, if I make one corner super sharp and perfectly focused, the opposite corner will be not quite perfect. But if I stop thinking about it I don't notice it. If I had to read small text in the corners regularly I might notice it, but overall it is so incredibly sharp of a picture that I have no personal issues with it. Could it be better? Yes. Would I notice while watching blu rays or playing games if it was better? no.
The projector is mounted directly above where I sit, and I DO hear it. However, it is reasonable, so unless I am listening for it or there is a dead silent part of a movie, I don't hear it. I have a gas fireplace in the room and if I run it and the heat collects at the ceiling, I will notice the fan ramp up on the projector and hear it much more loudly. But this is not usually an issue.
I noticed someone said a "con" was that the remote eye required you point the remote directly at it, and that is not true.. I point the remote at the screen and it reflects perfectly every time.. As long as I am not pointing the remote at the ceiling or at the floor, it works perfectly.
I have two gripes about it though. First, my programmable remote does not have any codes that work, and even learning remotes with only a single power button don't work for both on and off because they are different buttons and different IR codes. I would like to get a quality learning remote (like a harmony) but I haven't found one that has enough regular buttons for all the features I use regularly on my cable remote. I don't want to have to use a touch screen remote because I like buttons I can feel for. So I have to have the projector remote to turn on and off and to switch to the second hdmi input when I go to blu-ray or video games. My old Marantz receiver doesn't have hdmi switching, so I use the two inputs on the projector.
Second, the hour glass is frickin annoying. It takes far too long. Even my old mits RP could switch from 480i to 1080i ten times faster. My lcd's in other rooms are instantaneous on switching from 1080i to p or even to 720 (my cable box will upscale 720 and 480 to 1080p but not 1080i, so it changes from channel to channel). I am considering replacing my perfectly good Marantz receiver with something newer that has hdmi switching and 1080p upscaling built in so that the projector never switches modes and I don't have to see the stupid hour glass. Tough choice because my old Marantz works perfectly otherwise.
Otherwise I am VERY happy with it. I realize that more expensive projectors will have better blacks and all that, but frankly it is good enough for me by far. I am not a perfectionist although I do like quality, and the picture is close enough to perfect for me to not care if I could improve slightly. As I said, if someone pointed it out and showed me side by side I might feel different, but one thing I learned from being in the audio business professionally for nearly 10 years was that if you don't point out the flaws, MOST people will never even spot them, and half the people who think they are some kind of "phile" will be wrong in pointing out the flaws. Don't put too much weight behind what some people comment on here, unless you are into comparing extreme details, you likely will never even see anything mentioned here. If you are on the fence about buying one of these, I will leave you with this: make sure you use the projector calculator for your placement and don't worry about it being absolutely perfect, you WILL be happy. You have some "fudge factor" but your best results will be if you are centered properly and have your spacings right. Don't just assume you can put it wherever and it will work, you do have to plan for placement, but if you are off by a few inches you will be fine. Buy through amazon and if you are unhappy with it, they WILL take care of you, their service is excellent and all you have to do is complain sometimes, which is an easy process. If you are trying to achieve the picture quality of a $25k projector, then this isn't the one for you, but if you just want a great picture on a really big screen, go for it.
One more point to make: I questioned between a large lcd or a projector and it was the biggest decision I considered in buying this. In the end, you have to decide what is most important to you. If you can darken the room a lot and are OK with having to darken the room and let the projector warm up for a few minutes before watching EVERY TIME, then you would be OK with a projector. If you don't want to darken the room every time and just want to turn on and watch, then you will likely be happier with an LCD flatscreen. If you hate the idea of darkening the room to watch tv, then the big screen size will probably not be enough to keep you happy.
Hope this helps for the newcomers.