Hello all, long time browser first time poster.
I picked myself up a 2045 and a 1070 during the boxing week sales and after putting the projectors through their paces I have to say I am keeping the Epson and the Benq has gone back.
A little background; This is the second projector I've owned with the first being an Optoma HD70 many years ago. I thought the Optoma had a nice picture colour and contrast wise but instantly suffered eye strain and saw rainbows left, right and center. needless to say I struggled through it only to sell the unit 6 months later and figured under $1000 projectors just weren't going to work for me (LCDs at the time were pretty screen doory and washed out).
Flash forward to the present; I had heard a lot of talk about how the Benq 1070 was supposed to be "the best" when it came to low RBE from a single chip DLP so I though I'd try it out while hedging my bets with a 2045 due to the press it was getting from its extra features (CFI) and better contrast levels/improved auto iris.
My room is in the basement, light controlled but not treated. I can get the room pitch black in the evening and extremely dark in the daytime. The walls are a fairly neutral beige that's about equal to an N8, this was my test screen though I will be painting a screen on the wall using 2 coats Kilz2 and 2 coats CIL Unique Gray in eggshell. The projectors were tested off of tables but the Espon is now ceiling mounted about 14' back from the screen which is roughly 130-140" diagonal.
The Benq was a non starter as I was still seeing rainbows on the unit and feeling the all too familiar eyestrain that I got from the Optoma. To be fair, I definitely saw fewer rainbows than I did with the HD70 but once I start seeing them I can't un-see them and eyestrain is well... unpleasant. So the Benq was off the list.
The Epson; Out of the box the Epson was weirding me out with some serious soap opera effect. After a quick search I found that this was the CFI in action so I promptly turned it off. 3 full movies on the 2045 and I have not seen a need for the CFI, motion is just as good as my 51" Plasma. I rocked out a little Fallout 4 from my PC and had no problems with lag. Convergence was fine on my unit with green only being off maybe a 1/4 pixel, picture is razor sharp and pixels are undetectable from more than 3-4 feet away.
Switching from one projector to the other I did find that the Benq was getting slightly
better blacks but to be honest I am more than happy with the blacks I'm getting from the 2045.
So to summarize:
Overall picture quality: If I had more than 15 minutes in between seeing each unit I'd be hard pressed to give either the edge, it really does take a back to back comparison for the Benq to rise above the 2045 EXCEPT for the rainbows and headaches. So to be honest, at least in my case I give picture to Epson. If you are worrying about picture quality, going into a light controlled room on an n8 surface you should be totally satisfied with the 2045. I know I am.
Warranty and lamp replacement: Epson all the way
Room placement: Gotta give this one to the Benq, luckily the Espon worked out just fine for my room as it has low ceilings right where the projector was going to go.
Just thought I'd add my experiences to the list, figured after mooching all the great information on this site the least I could do it pound out a few paragraphs.