Did a quick search in Toms Hardware and a few other sites, while there are a few SATA dvd drives available there seems to be no significant improvement in drive performance, in fact in some tests there is a drop in performance.
Even though the article is from late 2004 it's still fairly applicable.
This is mostly due to the fact that the drives themselves can only read/write at a speed lower than the data can get to/from the drive.
I guess the one advantage is neater cabling though.
The article with benchmarks is here:
And some drives that have SATA:
Plextor PX-716SA (probably nexer models avail, check Plextors website)
One of the best performance IDE DVD Drive: Pioneer DVR-111D
Also I have heard of Windows XP having trouble with SATA, you may want to check if this is still the case.
hope this helps.