UKC

Not willing to let my Anasazi Verde's go. The most comfortable shoe for multi pitch trad I've ever had. Could almost live in them. 

Looking at resoling but can't find anyone using the old Stealth Onyxx rubber, only the C4. Having rejected a pair of Blanco's because I found them way to painful to be useful I have no idea what the C4 is like.

Would it be a bizarre match to pair the C4 with the Verde's?

Any advice on this would be helpful

C4 is very similar to Onyxx really, you'll likely not notice any difference. 

(Some claim that one rubber is slightly better at edging and at lower temps, while the other is slightly better at smearing and at higher temps, but the differences are very slight.)

go for it!

i really don't think you will notice a difference unless you overthink it

Awesome. Thank you both.

Will get it done!

C4 is better than onyx , significantly