The Corsair ones are crap.
The only sensible choice in there seems OCZ Agility 3.
The choice breaks down to,
OCZ Agility 3 60GB
Crucial m4 60GB
Corsair Force 3 GT 60GB
I've listed them from lowest in price to the highest. Naturally, the price will also be a factor as to how much performance it'll give
Since you're on Sandy, here's to hoping that you have a SATA3 motherboard so that you can PWN this SSD!
Oh, and no point in getting old SATA2 ones.
I can give you a better suggestion if you can give me a budget idea.