Another vote for m4's.

They were never the most screamingly fast (though the 0F firmware appears to have made them faster) but I trust Micron to know their own in-house flash technology and I've not had issues with the 3 I've installed in machines belonging to family members - who are all remote enough for it to be a pain if the drives failed.

Obviously, I also ensure there's a backup strategy in place but that's a good idea anyway...