Since you mentioned the C14 and GL18, how about an FJR?
Don't know if they are shaft or chain, and I'm too lazy to look it up, but it seems to be a pretty respected sport tourer. I looked at one when I went in to look at a S10, and came away more unsure of my priorities.
I also came across a Tiger recently. I can't decide if its worth "upgrading" to from my DL650. There is something to be said for a basic, inexpensive, and reliable bike. Sometimes a specialized tool is better than a leatherman.
Maybe consider a smaller dual sport for that 10%, and a street bike for the 90%. I've got a DRZ, and keep thinking about a pavement eater for my "primary" bike, instead of my all purpose Wee.
I know, I really didn't help you at all, but know you're not alone trying to figure out which features are most important to you.
07 DL650, blue
07 DRZ400, also blue
11 TU250X, not blue
98 KLR650, 01 SV650 (another blue bike),89 KLR650, 92 Bandit 400