There are some discussions here on the Luminous Landscape forum that might help you (link 1
, link 2
) but with the constant changes and improvements in the technology, the choice is difficult.
One thing that you might consider is that sone SSDs with Sandforce controllers don't seem to like compressed data (think JPEGs, compressed RAWs or TIFFs). AFAIK, OWC SSDS use Sandforce controllers. I have no experience with OWC SSDs but I've always been satisfied with the customer service they provide.
For my MBP, I decided to get a Crucial M4 but no local shop had it in stock so I went with a Samsung 830 and I very satisfied with it so far.
You might want to read AnandTech SSD benchmarks
or if you read french, Hardware.fr published a good report
, translated via Google here
I can't help for the 2-SSD setup, though.
Hope this helps…