OK guys, I think I will go for either the CT-5 or the CT-3, but this leaves the problem of breaking 1/8" chains. I didn't think about it, because my trusty Rohloff Revolver can do both 1/8" and 3/32" easily.

Any suggestions for a durable chain tool that would (also) work with 1/8" chains?

And thanks operator for reminding me of this "tiny detail".