Optoma - ML500

I have a Optoma HD20 I paid $25 for. Infocus in116x $60, and Optoma ml500 $50. I use a $60 100in elite screens manual b, bought it on discount because the metal case was dented, no one can see the dent facing the ceiling. They are all more than usable. All bought used. The infocus is more of a regular price for it and the other two I got good deals on. The infocus after adjusting the contrast, brightness, and focus and set to 720p (Not upscale to wxga) creates a beautiful picture. It reminded me of being on a showroom floor looking at high end tvs. I know objectively it doesn't compete, subjectively I dont care and it looks good enough to be put in the same category to me. It makes me hapoy. And caused my grandma to say "wow, look at the picture" for over 10 minutes while I played a video.  So to recap if your not an enthusiast, yes we can get a good projector for under $500 on the used market. There is a vast difference between specs which are objective and what someone may find enjoyment in which is very much subjective.