you missed the newegg 650 price for the pro8200 by 2 days.
I don't know which would be good for you, maybe look at both forum rooms and read the amazon reviews.
I know the pro8200 is good for gaming, I'm just not sure about the acer h6500. Check warranty, bulb life, bulb replacement costs, look at inputs/outputs of both devices. Look at the last 4 months of posts on both, and give it your best shot. Look to see if people are reporting problems, how is costumer care, how is the Rainbow Effect on both. Etc.
There are supporters of both PJ's, so after you read all the reviews/forum room stuff, come back here and tell us what your thoughts are, and we might be able to help narrow it down for you.
I mean , do you CARE if one PJ is only one year warranty and the other has 3 years. You might not the first year, but in year 2 and 3 , you might.
I don't think the acer has any internal speakers, the pro8200 has 2 speakers 20 watts 10x2. You can check the features and compare them. On this site, the pro8200 is rated as number 1 under 1,000.