I have an OCZ Vertex Plus (Sata 2) with firmware update in my MBP06 and I am more than happy with it!
I think the prices are now down to where an SSD of a decent size is now a viable upgrade for me. But my god it's impossible to find consensus on what is a good reliable drive.
I know that the first answer from a lot of people will be the OWC Mercury Extreme but I have 2 problems with that
1. Its simply not available here in Sweden and importing one adds cost and makes returns really troublesome ... which brings me to the second point
2. They just don't seem reliable with long term usage. I have 3 friends/colleagues who have gone with these drives. My friend had his first one crap out after 2 weeks. It took 8 weeks to get a replacement and that died after 3 months. One of my colleague's disk is fine after 3 months but thats not exactly a long term test The other colleague has had his 9 months and it runs like crap even after firmware upgrades, restoration attempts etc etc
Intel drives.
I've had four, with a mate having a 5th and they have all worked flawlessly (And the ones I sold are still too).
You get what you pay for with Intel SSDs.