(iMac 2011) I had to return an Intel 510 120Gb after about 2 months due to it constantly failing verify disk in Disk Utility and corrupting various files. I re

(iMac 2011) I had to return an Intel 510 120Gb after about 2 months due to it constantly failing verify disk in Disk Utility and corrupting various files. I replaced it with an OWC Mercury Electra 120GB; had to return that one off-the-bat, as it was DOA! Not having much luck, but I'm hoping my OWC replacement will be OK. . .