I've had two different Samsung SSD drives fail on my computers. One (early 960? Pro M2) developed some strange intermittent failures at boot - if it was detected, then it worked ideally; another (840 Evo SATA) started to get some nasty read errors, but we could read out most data from it and after recommended firmware update it likely started to work flawlessly. 840 was one with such initial firmware, which lost track after drive filling up more than 95% or so.
No other problems with plenty of different Samsung SSDs on other (mine and co-workers) computers so far.
Because we here do not buy almost any SSD drives from other brands, then I really can't comment on other manufacturer SSD problems. Few old Intel SSDs are working well too.