Though it would be hard to find KI-396's to audition, I would strongly urge you to do so before choosing them over the Cornwalls
I agree with you there and I think that can be said about ANY speaker that you are going go spend this Kind of coin on.
This is pretty good for a 2-way design.
It's ridiculously good
But for use with rock or jazz I would think they'd require a subwoofer.
You are ABSOLUTELY right about this. They NEED Subwoofer(s). Problem may be, depending on how you like to listen, you need to find bass to keep up with them. I got that covered, but many here would say my setup is Def ugly. That I don't so much care about. Wouldn't be my first choice aestheticslly, but there there weren't really options..