I've finally narrowed down my SSD choices to the OWC Electra 6G or the Mercury Extreme Pro 6G, both in 120 GB capacity. I'll be moving the HDD to the optical bay and putting the SSD in the main HD bay. I have a 2010 MBP (see signature below), and realize I have SATA II, but would like to future-proof myself a bit and go for the 6G, especially since the Electra is priced very close to the Extreme Pro 3G. The jump to the Extreme Pro 6G is a little steeper, but still not much. My question is, am I doing the right thing? Am I really future-proofing myself, considering the rapid development of the SSD market? Or will I toss aside this SSD when I upgrade in a year or two anyway? I'm swayed toward the 6G because of the newer firmware and controller, but just not sure it's worth the extra cash at this point. Will I have compatibility issues running either of the 6G models? Looking for input from those that have been down the same road. Thanks!