If this is mainly for movies, well I can tell you that as long as you get a good JVC sample, then there is really no comparison overall, you will like the JVC better I think.
I would give AVS a call (Sponsor of this forum), send Mike@AVScience.com an email first and find out what B-Stocks or Refurbs they have in-stock for a JVC.
For movies, the JVC > others I have seen (and I've seen a lot)...
Sometimes AVS had some B-Stock HD-250's in around $1300 I believe, that is a heck of a projector for that price, and still comes with 2-year MFR warranty.
If you buy a newer JVC, like the RS-46, I would think you might get 5 years out of the unit, heck maybe 10, just depends partly on luck and stats. There is no exact number of how long a projector can last, though DLP's do tend to last longer sometimes (but not always).