I've got one of these:
Planet Waves : Circuit Breaker
20ft, straight to angled jacks. For some reason it keeps falling out of all my guitars easier than any of my other cables. With some guitars it's just a slight bump and it comes out, with others it takes a bit more work, but not as much work as it should. I mean, it's a fantastic cable but if it won't stay in what's the point?
That's odd, I've got an older one and it's the tightest fitting cable in the house. Mine has the compression spring though.