I personally use 1/4" black w/red tracer in my work- but I don't do the unisleeving/etc, atm I limit mine to fan controllers, fans, front panel connections...and I use the techflex 3/8" "carbon" for my sata cables (its a mix of black and clear)
my personal opinion is that its not very often people are going to be inspecting a PC with a magnifying glass and fine tooth comb, most observers *at least where I live* would be in an ooh ahh type state just seeing cables that arnt normally sleeved being sleeved (heck, most of the people I know go pretty gah gah over regularly sleeved power supplies)
however, IF I could find a decent supplier of the cleancut at decent shipping rates to canada (aka not what cableorganizer has) I'd more readily consider using that- as from what I've noticed, that SEEMS to be the general base of what the murdermod sleeving kits use (techflex can "custom" make cabling for sufficent sized orders)