I've had both Samsung and Intel SSDs and I can say you cant beat them for reliability. I also have an OCZ thats been flawless for me, but ive had friends who wernt so lucky with them. Intel SSDs r pure win on all fronts.

Before u condemn ur SSD as the cause i wud clone ur C drive to another HDD or SSD if you have one laying around and use that for a few days and see wut happens, then u will be sure. plus u will have a full C drive backup to boot.