There are four reviews of the OWC Mercury Extreme Pro 6G but the web sites are not as well known as the sites that are popular with gamers and enthusists. I think three of the reviews were done by sites that cater to Mac users.
There will probably be some confusion about the SandForce controllers. The official SandForce web site simply shows the controllers as SF2200 and SF2100. The first is SATA III (6 Gb/s) and the second is SATA II (3 Gb/s). No mention of SF2281 or any other variation.