Went with the Maxtor SATA II MaXLine. From the reviews it sounded like the fastest according to recent tests.
"February 4th, 2006 -- New Maxtor SATA II MaXLine appears to be a screamer, according to the tests run by AMUG. The reported 70MB/s sustained write speed makes it the fastest 7200rpm SATA II drive and rivals the Raptor 10K in sustained transfer speeds. That's model 7V300F0 which is a bargain at $130 for 300GB."