[jchan172]

Hi, I'm making a custom cable for my Sennheiser HD-650, and I'm using Cardas L-4E6S 21 AWG cable. For the sleeve, I going to use nylon multifilament, but I don't know what size to get. Could anybody help? Also, I've seen a lot of people use techflex that'll show the cable color underneath. If I were to use that, what size would I get?
 
I'm curious about the techflex. Is it SUPER stiff as I've heard people say? It looks a lot cooler than just nylon multifilament, but do the looks outweigh the practicality?
 
Thanks for the help!