I have a MacBook Pro 13 and I had returned a 512GB SSD with firmware version 0309 because of high battery consumption earlier but the drive worked perfectly on performance side. I called up crucial support and they told me the new firm ware has improved power saving features and so ordered a new 512MB crucial SSD. Yesterday I got my new SSD with firmware 000F and now i am seeing lot of freezes and I observer that the CPU usage is 100% when this happens. I have an i7 dual code 2.7Ghz processore and could see all the processors are running at 100% when freeze happens. My advise is Don't go for Crucial SSD until a New firmware is released or stick 0309.
MacBookPro 13" 2011 early edition
MacBookPro 13" 2011 early edition