The Feather AC feels sharper (and harsher) than any well-honed straight. However, with a light touch (and a shallow angle), it will shave brilliantly.

I now use 'regular' straight only, but that's because I like the whole experience of straight shaving. Just based on performance, there's no need to switch away from the Feather AC system, if it works for you.

If nothing else, it will teach you to use a light touch.