Interesting to hear stories of OWC SSDs failing. I've never bought an SSD from them, but I've bought plenty of RAM from them over the years and never had a prob with their RAM (at least to date, knock on wood). I did have problems with an OWC Elite Pro dual thunderbolt RAID enclosure. It crapped out after only about 2-3 months (would unmount during reading/writing) and started causing kernel panics on my 2013 Mac Pro. They sent me a replacement internal cable, saying the one it shipped with wasn't up to spec, but that didn't fix the issues. I back up all my RAID arrays, but it was a nice wake up call and friendly reminder that RAID 1 in a single enclosure isn't a suitable backup by itself haha.
FWIW the only 3rd party SSDs I've bought have been samsung (840 series) and they're doing fine, although they don't see heavy use. Haven't had a problem with any of the 2 Pegasus units I have yet either, again knock on wood.