I mean if you're going to use some high quality Intel drives. I think you would be safer than you be with a hard drive. I really do like their testing process. They analyze every failed SSD they get back to improve their tech. Test thousands of drives and really do their best to keep the lowest ARR in the business. MTBF doesn't mean anything. What you should be interested is in the ARR or Annualized Return Rate. Very hard info to find but some stores publish and can give you an idea of how often they *really* fail.