I have the Crucial C300 128GB and it's incredible - I highly recommend it. At first, I was thinking of getting the intel one since it had an amazing reputation for its reliability and performance, but I decided to dig deeper, because you want to make sure that what you're getting for such a high cost turns out to live up to your expectations. I game a lot and ended up getting a 128GB C300 for £240.
The good thing about the C300 is that it utilizes a SATA III connection for higher read speeds, which is far more important than write speeds. As SATA III devices still aren't very common, it's nice to have something extra.
In gaming, loading up maps and zones is where high read speeds shine, such as if you'd happen to play a MMO. Although it doesn't come anywhere close to maxing out the maximum bandwidth speeds on SATA III, it's still above SATA II and well, I guess that's where the selling point comes in.