Neme,
Agency power makes a really nice braided line that is wrapped in some black plastic protective shit. they make a long line for "AT to MT" conversions and a short line that is probably for people who eliminate the dampener box. i actually accidentially bought both of them,and it worked out great and it's the perfect length when using both.
short line:
http://www.agency-power.com/catalog/...roducts_id/131
long line:
http://www.agency-power.com/catalog/...roducts_id/171