Since it's your first PJ, maybe just KEEP IT SIMPLE!
You are doing the right thing, you are researching and posting on AVS forum room, and you are giving lots of very good info. I can tell you have been reading in this room. Way to go.
Now, since it's your first PJ, maybe get a good cheap PJ that is 1080p with long warranty and got good ratings. How do you know about black levels and all that other crap!
Why do I say this? Because there are many people in this room that have all types of experience you don't have yet.
You are in first grade in PJ's. So get your feet wet with cheap and good. Don't get a PJ that people say suck, or super cheap.
Also get something on sale, and has good return policy.
Now, in the budget range, all these PJ's are pretty close to each other. I mean maybe one will be a little better in this area and not as good in another.
At this point you don't know if you will use it that much, or if even PJ'S are your thing. Next year or 2 years from now you can buy another one.
I would read the amazon reviews and go to forum rooms of PJ's you are interested in and read the last 3 months of posts. Are the people happy as a whole? How does the company take care of problems. Are people having problems with PJ that others say they have same problem. Now if you have long warranty, find out if people say "company fixed it and they were great". Or they sucked.
Now any PJ you get, relax, and don't like it or not like it, give it 48 hours to get used to it, try it at night and during the day, and watch different movies tv shows, and different sources, 360, pc, ps3. And find out calibration info for your PJ, and just use it as starting point. And if you have any problems with the pj you get, go to forum room of that PJ and post it.
All the pj's you listed are very popular, so you are not going for white van scam.
Some are bothered by RBE , some not. But if you are planning on having other people watch the PJ with you, they could get headaches if you get PJ that others say has rbe problem.
Now, some PJ's are multipurpose use. Meaning you can use it in bedroom, or in living room during the day, or on porch. Others have to be in dark room ONLY. Some PJ's have internal speakers which makes it portable too, and others have no sound, and if you run HDMI into it, you will have NO SOUND and will need outside speakers.
Now, you may say you only want ceiling mount. okay. You mean, you NEVER want to go to friends house or watch in backyard, or use for work or school . Ever?
My view is, I like options. I have taken my PJ onto porch, to friends homes, used it in bedroom , and in living room with lights on and in room that is super dark.
Have fun researching, that's half the fun.