Just chatted with someone over at OWC. Here is what they said
"Hello There! For the MacBook5,1 we highly recommend the use of a SATA 2.0 (3Gb/s) SSD such as the OWC Mercury Electra 3G for your computer. While a 6G SSD does function, it will only do so at SATA Revision 1.0 (1.5Gb/s, 150MB/s) speeds rather that the SATA Revision 2.0 (3.0Gb/s 300MB/s) speed the computer can deliver. It is not completely verified, but we have seen it due to the SATA cable being inferior, but I believe it lies somewhere in the hardware."
In regards to my mac: "Yes, your machine has SATA 2.0. Technically SATA is backwards compatible, but the SATA 3.0 drives do not function as one would expect in nearly all 2009, and 2010 Macs."
Then I asked if he had opinions on any other SSDs that would be good for my mac: "Honestly, I am not aware of any other 3G brands out there. I have not looked, but I do not believe they exist."
It seems that I need to get my hands on a SATA 2.0 3G SSD according to the person I chatted with. He said that he doesn't know of anyone else that makes them.
So a few questions...
1. Are there other companies making SATA 2.0 3G SSDs that I should look into.
2. Is it even worth upgrading to a 3G SSD?
Thanks!