I'm 10 for 10 with my George Ls cables!!
I'm an Electrical Engineer by day and I've seen 100's of different types of cable, made several of them too!
I've always made my own guitar cables...finally tried the George L's. Solder-less is the way to go. Much easier, faster, cleaner, safer without the soldering iron and can carry some spare parts too to make a cable in a pinch, but...
WATCH THE VIDEOS online to be sure you put them together correctly!! There are a lot of ways to mess it up.
I wouldn't expect these cable to handle a lot of movement. Perfect for a pedal board, but I wouldn't expect them to work for long if you unplug them and throw them in a bag after each gig. Having said that, I've rearranged my pedals a few times now... and no problems! Audio quality is perfect, no crackles when I move the cables (yet??). I'd guess the plugs are reusable, so if a cable does fail, could probably cut the ends off and redo it!