Nubius, no offense or anything, but the the X600 is a value card.
Megadeth, you are completely wrong here. The 6600 and the X600 were made to be one in the same, they are both the value cards. ATI Completely screwed up on that one so that the only thing to compare it would be the X700...this is known and many articles on it.
Anything below the 6600 would be the 6200 and that's the mainstream card which REALLY sucks for gaming.
Also look at the above article.
And just because the dude has the card doesn't mean he's spent time double checking against other cards now has he? If he can't compare other cards in his system then he's got nothing.