My CU22 came from the factory with 10's and I've left it that way. Lately I've been considering a change to a lighter gauge. I've used a 9.5 set on my Tele that I like. I tried a set on the CU22 but it would require a trem setup to work so I changed back to 10's. I'll be changing pups on the guitar soon so I was thinking about making string gauge change at the same time. I'd be interested to hear your thoughts on 9 vs 10 gauge strings.