I'll probably be in the market for a 512GB SSD in October/November, and since Crucial m4 seems to be the most reasonably priced of them all, I'm strongly considering buying it (I'd obviously gladly take Samsung 830 over Crucial if it weren't for Samsung's high pricing). I'm curious about one thing though: will it get slower after, say, months of use? How does it do in managing "garbage collection"? I currently own an OWC Mercury Extreme Pro 6G (120GB) SSD and I've had it for 8 months now. It doesn't seem to have slowed down a bit, so apparently they did a good job with "garbage collection" thing that's integrated into the drive. Will Crucial be as good?