I'd wait another week or 2 before buying this laptop, Santa rosa came out May 9th, many company already have Santa rosa laptops but asus is a little behind. I suppose they should come out next week, or maybe they're waiting for Nvidia and their 8xxx series. So my guess is they'll be out by the 2nd week of june.
Centrino Pro:
Wireless N
64-bit CPUs (which I think isnt the case with T7200-T7600, not sure tho)
Flash memory (1Gb is about 50$)
Faster FSB (800MHz vs 667MHz)
Slightly longer battery life
DirectX 10 support
and more!