After some research it seems to be safe to say:
SSDs are not a good choice for really busy studio work with large files.
A Drive that kills itself more or less slowly, but also assuredly is not to my taste.
Fast as hell in the beginning have even good brands lost 30 to 50 % of read speed after an 1 week stress test.
Since I am still fine with the existing HDDs ( no excessive track counts, ridiculous amount of plugin use or heavy automation) and not yet had a drive crash on me ( except in my office ) I’ll stay with those till they have found a cell material that does not eat itself and a controller that is not on its edge with wear-leveling to keep the SSD alive a little longer.
I am probably conservative, here, but also on the safest side for my work.
Big K