500 GB Samsung now out! ... better vs. 7200 PM?

Well, the 500 GB Samsung drive (5400 RPM, compatible with the 15" MacBook Pro and the MacBook) has gone on sale (http://eshop.macsales.com/shop/woot/).

I know this has been beaten to death, and I understand there are a lot of arguments for and against a smaller, but faster RPM drive versus a larger, but slower RPM drive. I am wondering, in comparing this 500 GB, 5400 RPM drive to a 200 GB, 7200 RPM drive, what would you say would be faster?

I understand that capacity can make a difference.