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.