If you only have SATA II - Go for a SF12xx controller SSD, ie Vertex-2, Phoenix Pro, couple of others. Keep in mind the SATA - II models represent a Hugh jump in performance and the price is starting to come down, do to introduction of SATA III versions.
If You have Sata-III, or for near term future proof go for one of the SATA III models (cost vs performance may or may not justify).
Couple of comment:
SF12xx controller SSDs are faster than Intel's Sata, But Intel's SSD is more reliable.
Sata - III SSDs. Intel has deviated from past models in that the 510 uses a 3rd party controller, Marvel. while a good SSD performance wise, it 4 K random read/writes are not that great - slower than some SATA- II SSDs The SF2xxx controllers are faster and probably a better buy in terms of performance.
Side comments, OCZ may not be the better choice interms of reliability - just my felling bested on a couple of articals.