I've never had issue with any of the BT strings over the years-even the "cheap" black non-twist ones during the 99/2000 model year on my first Extreme Solo didn't creep alot , though my peep did twist a a wee bit. Still it was FAR better than the stock strings on my Hoyt, Jennings, Mathews, Darton & PSE bows I owned at the time.
Of course then came Winner's Choice, and then the VT/Stone Mountains, and then the "in-house" strings. Singles, Force Mutipliers, Duals and now Binaries- I have never felt the need to upgrade the string on any of my BTs (and I've owned a bunch). They lock up pretty quick.
I remember when the switching from Winner's Choice was a big drama on here and AT.

People were predicting the Apocalyptic End of BowTech.
yeah right.
I wonder how many of those drama-queens in retrospect would admit it's been a good thing- The strings since then (whether SM/VT/In House) have been extremely high quality with one HUGE benefit- MUCH less noise than WC (which always bugged the crap out of me). WC always makes a bow sound like you've got a 20 pound carp by the tail and slamming it into a tree trunk.