I replaced my rear rim brake with the Avid BB7 and with the extra long cable run can come more friction, wear and drag
so I went with a Teflon coated cable..
http://www.universalcycles.com/shopp...504&category=7
And YES I could tell the difference XD
Remember, support your LBS, let them order your toyz for you because the more they order the better pricing they get.....