Personally, we've had many more HDDs fail in the past decade than SSDs. We haven't had an SSD fail over here after our first SSDs, two old OCZ Vertex 2 drives failed. We've had a bunch of more or less expensive SSDs from Samsung, OCZ, Corsair, SanDisk, PNY etc. in multiple systems since then using them as we would a HDD and all of them are still working without issue (need to knock on wood, I guess). In the meantime, 8 HDDs failed (a happy mix of Seagate, WD and Samsung) since that time. So from our personal experience, SSDs have proven to be more reliable than HDDs over the past decade or so. That can just be a coincidence, of course. But I don't have any more concerns about SSD reliablity compared to HDD reliability these days, at least for personal use.