Ok so lumens is more then mine (sanyo z5) and I can watch it without problems with a light on. Looks way better with lights dimmed or off. If I have just my potlights on then it is very watchable with the 6 illuminated. The contrast is significantly different so I am not sure if that would make it better/worse then mine. If you want to get package done and over with and want a great projector the 1699 sanyo at costco is a great buy for all in 1080p glory
The optoma got alot of love from memory express' website people are saying its plenty bright. Best part is if you don't like it costco has the best return policy.
http://www.memoryexpress.com/Product....aspx?curtab=2