Pros: Fast, big, quiet, and efficient. Great hard drive.

Cons: None so far

Overall Review: HD tune benchmark on the 7200.4 was max=97.9 MB/sec and avg=78.9 MB/sec . Previous hard drive which was a WD scorpio 250 MB 5400 rpm benchmark was max=61.1 MB/sec and avg=46.5 MB/sec. Approximately a 60% increase in the average transfer speed comparing drives.I have not noticed any more heat, decrease in battery life or noise from the new drive compared to the old drive.