I've had the 350 for about a year now, and it performed well in our upstairs 15' x 18' x vaulted ceilings room. It also did a fine job in my monster basement HT room that is pushing 900 sq ft with 9' ceilings. However, I did just recently upgrade to the 500 and it is amazing, but again my room is huge. You could always order from the Factory Outlet and get an additional 10% off.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85