I think the key is to make sure the driver software is mature at the time of purchase (no room for optimism when it comes to your data). I've had a Crucial m225 for 2 years, perfect performance and reliability so far. The speed is not setting any records but just about maxes out my SATA II bus anyway.

probably hit or miss. I also have a crucial ssd (realssd c300), no problems for past 1.5 years.

I've had my Crucial M4 for almost a year and it's been rock solid. YMMV