And realize that CS sold them not "dialed in" for years. I had one that was unusable until I took it apart and bent the spring. I know they have fixed this "issue" because I had the same knife in a later iteration that was noticeably easier to use. And no, your troubles aren't over for years. There are plenty of reports of issues on the tri-ad lock from CS, just like any lock from any company. Stuff happens, and beyond QC issues, the Tri-ad lock will serve the end user who uses a knife as a knife just as well as any other lock if "troubles" for many years are a concern. let's not use this thread to put our favorite brand on a pedestal, shall we? Topic is you favorite lock....
I've had most but I keep coming back to the back lock that Spyderco does. Simple and effective. Does everything I need and nothing I don't (unlike cold steel with the tri-ad lock, If I need that much strength I'll choose the proper tool rather than a folding knife). Might it be that it comes on the designs I like? Sure I guess. The back lock on the Siren is so smooth. I hate the the "drop shutty" trend nonsense, but on the Siren back lock it really makes one hand closing so easy! I like the button and axis lock as well but I worry about detent retention for my uses. Framelocks are fine but the are so prevalent and require more attention to get them right. Never liked the idea of the lock disengagement being right where the blade will close.