i've heard about tons of different graphics cards now, like 6800 GT, NU, 9800 XT, Pro, AIW. What slots do these have, and which ones are the best ones? The manufacturers websites don't help cos they all say "oooh this card is brilliant, so is this one, and this one" blablabla. Can anyone clarify which graphics cards are the really good one and which ones are cheap versions of good ones? e.g. 9800, 9800 Pro, 9800 XT, 9800 AIW?