I bought a Samsung 830 SSD from (in my sig), it was and still is running great, absolutely no problems. Mine did come formatted for PC but that's a quick and simple fix via Disk Utility. The box was opened, but had all the books, etc. Plus, Amazon has a great customer service department, so there's really no reason to worry. You could write tens of gigabytes a day to most SSDs without degrading them. Go for it!