I received samples Friday of the OWC Mercury Extreme SSD with the newest firmware. I'm getting the same killer speeds that I got with the last firmware release:
http://barefeats.com/hard130.html
I've seen some discussion about what constitutes an enterprise SSD processor. In the case of Sandforce, the SF-1200 and SF-1500 are both enterprise class processors. The SF-1000 is consumer class. OWC uses enterprise class to provide performance without write speed degradation experienced by other SSDs.
In a soon-to-be posted SSD shootout that includes Apple's CTO 512G SSD and the Crucial RealSSD 6Gb/s, I will go into more detail on what's different about the 1200 and 1500.