Since the 2nd projector is your backup, maybe think outside the box. Maybe LED projector or DLP projector or HDTV instead. LED for long life, not have to worry about bulbs and could be good for your bedroom or other room.
DLP projector for brightness, cheap 1080p's are portable, come with internal speakers, can take with you outside or to friends house and can be packed away until needed or put in living room since it would be good in bright conditions.
Your 8350 would be your home theater projector and the second PJ could be portable, gaming machine for bedroom, living room, den or to show off at your friends house. The 8350 would be a pain to take to friends home, take it down from ceiling, it's big momma, no internal speakers.
You save a little money so in 2 years you get a NEW home theater PJ with better specs.
In either case, you could have fun researching in LED or DLP direction. Then decide if secondary is HDTV, LED,DLP or go with another home projector like the other guys are talking about.
I have viewsonic pro8200 DLP because it was rated pretty good on Art Feierman's site (projectorreviews.com) , tied second place with the epson 8350. They both took runner up or 2nd place in the BEST of 2011 in UNDER 2,000 category: http://www.projectorreviews.com/1080..._under2000.php
Look towards the bottom of page, right after the epson 8350.
Art liked it for excellent cross-over projector, having speakers, lots of inputs and outputs, could be used in multiple settings, bright, 3 year warranty. I picked up my viewsonic pro8200 for 650 from Newegg at end of Dec. Love it for gaming and bedroom and for travel.