konradh
Aim Assist is wonderful when I want it and extremely annoying when I don't. 
I use it to drag in clips where i want them, and to split accurately.
I had tried aim assist long ago and didn't think it was anything I'd ever need and never tried it again.
Yesterday I thought I'd check it out after reading your post to see what I might be missing.
Long story short, I find it very useful (especially with snap on) and I've committed the X shortcut to memory.
Thanks Konrad!