I guess what I was looking for was opinions on whether you use outside english when all else is equal. If you are not looking to spin the cue ball one way or the other off a rail, do you still use outside english? Consider the situation where you are not on a break shot, but you have a similar cut shot. Assuming position isn't critical, do you favor using a little outside english to "help" the ball go in, or do you use follow only, or draw only? Or, say you are shooting the 9 ball for the win and you don't need position. Do you throw a little outside on it?
Why make the shot any more difficult than it has to be? Your best percentage is always center ball. If you throw in that outside english, you may just throw the ball out of the pocket. Don't use english unless you need to (position, avoid a scratch, etc.).
If I have an object ball a half inch off the side rail about 2 diamonds from the corner pocket, and the cue ball is at an angle, I'm pretty much automatically going to put a little low outside on the shot, unless I can't make position that way. It does seem to "throw" the ball in the pocket more easily, but that could just be the way I got used to shooting those shots. I don't put english on my break shots, but it's really no different, so I'm starting to put a little outside to see how it goes.
IMHO, that's just an illusion that the brain perceives. A correctly struck center ball hit will cut the ball down the rail just as effectively.
But, I keep hearing that outside english does help avoid skidding.