Dont worry about the limited read.write number, you will probably changing your SSD long before you reach that point.
I dotn follow the word crashed? It wasnt seen on the UEFI/BIOS? If so then thats a hardware problem, if not you could try and see if there is a firmware update for your drive.
The only SSD that failed on me was an OCZ Vertex2 (that had to do with a sandforce bug), the rest of them that I have simply work without any issues.
I was used to a secure erase once a year but since the move on win8.1 i only used the build in TRIM function, other than that no complains from any of my SSDs.