I've been leery of the Crucial SSD's due to the various issues I've read about, but since I found one on eBay for a steal ($290 for the C300 256GB brand new), I decided to give it a go.
Firmware 006 out of the box, installed on my 15" 2011 MBP for the past few days, no problems thus far. I've tried to replicate some of the conditions for the beachballing/freezing, such as putting the MBP to sleep, but it's been running without problems.
It seems like many of the issues are on the 13" MBP, and not reading about many cases for the 15".