Well, since you're MBP supports SATA III I'd start with suggesting a drive that can take advantage of the 6GB/s that offers. The
OCZ Vertex 3 120GB IOPS Edition is just about as good as it gets.
However, if you're looking for something a bit more economical that will still perform very very well: The
OCZ Vertex 2 120GB rocks. I have two of these in RAID 0 (the 3.5" version, that is) and they're nasty-fast. However, if you can afford to get the Vertex 3, go for it, it performs as well as the 2 Vertex 2's in RAID0 (My Mac Pro doesn't support SATA III
).
I'm recommending the OCZ drives as I've tried others, Crucial and Corsair, and the OCZ's have performed the best, in my experience.
OWC also makes a highly-rated SSD based on the SandForce controllers, the
OWC Mercury Extreme Pro and
Mercury Extreme Pro 6GB...and there are other brands as well, but I'd definitely recommend sticking with a SandForce controller-based SSD (like the ones I've noted), as they seem to be the top performers now.