Im looking at an SSD now (ideally only want 30/40GB, but 60 is fine) to be my OS drive. The Force 3 is cheapest and has the best read/write speeds. The agility 3 is close behind and the M4 is the slowest (only just though). Out of these, the M4 is the best, but I dont see how, just people saying "Its naff, get the M4". Afterall they all have 3 years warranty, so if it fails and takes Windows with it, surely they'll replace it? (not a big issue for me as I get cheap Windows through my uncles company). If I have the SSD as my main boot drive and it fails, whats the worst that could happen?