air, water, or pelt?

Well I am going to get somthing to cool my 9800prp but I just want to know some things first. Basicly how well does the 9800pro overclock? Is air gona get me high and water gona take me slightly higher or will water take me a lot higher than air? How much of an oc difference between the MCW50 and the MCW50-T? Personal experiances? I am guessing that water will be a huge leap over air coolers.....

Adding an aftermarket aircooler didn't do much at all for my 9800 (+10MHz). I plan on going with the MCW50-T when funds become available.

My ATI Radeon 9800 NP does 502/349 max with a stock barton 3000+ copper base cooler.

www.freewebs.com/barton3000