Throttle and Kickdown Cable Selection

Maybe a good question to ask is "Has anyone every had problems with an aftermarket throttle pressure cable setup". While they may not have come stock on our cars, a lot of effort has gone into engineering a cable replacement to the rod linkage system that was stock. I'd like to think that the guys at Lokar and Bouchillon have some idea what they are doing given the number of products they've sold and continue to sell.
Personally, tried both the Lokar and Bouchillon and like the Bouchillon setup better; I wasn't a fan of Lokar's adjustment system of pinching a cable between a set screw and the linkage housing ala 10 speed bicycle brakes.