emarkd
(emarkd)
12
I have an SC62w and an SC63w. I’ve skipped the ’64w (so far) but did buy the new SC5c mk2, so I’ve got experience with the new UI. Bottom line, for me at least, the SC62w is still one of the best “edc” light Zebra ever made. The tint is great, and I like the beam shape better than the slightly more broad XHP-based lights. I can’t even see the difference in output, a couple hundred lumens is practically unnoticeable when you’re already up this bright. I do notice the heat though, and the much faster step-down. I haven’t tested it, but I’d wager my SC62w is brighter than my SC63w after only a minute or two of being turned on, just due to the required thermal throttling of the ’63w. And the ’62w isn’t as picky about cell sizes either.
That said, the new more-programmable UI is very compelling so the ’64w does call to me sometimes. But what I really want is the new UI in my old XM-L2 based SC62w, and that’s not gonna happen 
I may not be helping the OP shake loose a ’62w. Sorry!
I really do hope you find one though.