First off you need to know the "exact" distance you can have the projector from the screen. With a 12' mounting point to the screen neither of these projectors can even shoot a 125" image. The Epson's 4000 needs a little more the 12' from the front of the lens to the screen for a 125" image, the 3800 a at least 12'. From your description of the room it is fully light controlled and reasonable treated for reflections where a high contrast projector should be your only consideration. For the lowest cost with the security of a warranty the refurbished Epson 5040 is the best value by far. A used JVC if you don't mind the gamble of no warranty would be your best possible choice. JVC RS400 or better all have 18Gb HDMI and the RS500/520/540 or better have the color filter. For high contrast projectors you are generally limited to the UB Epson's, All the LCOS JVC's and SONY.
"Smart enough to know better, to old to care" ------ Dedicated Bat Cave Home Theater, JVC RS49U/Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 18TB DroboFS NAS
Last edited by rekbones; 01-12-2020 at 09:37 PM.