I just bought one yesterday, and well all the reviews I've been reading were pretty good. I guess getting this card was really worth $500 when it was releaed.
lol.. i hope you didn't pay NEAR around there... yes its a great card. the platinum edition is significantly more expensive than the regular x850xt, which isn't really worth it.. hope you didn't spend more than $90-$130 on it.
The X800 series wasn't that great, but for $150, its not a bad buy. That card was the best of the X800s. As long as you don't care about max settings or cutting edge eye candy, it should last you quite a while.