your experience with the Dunlop's you mentioned in the very beginning of your post match mine exactly. when you're leaned over in a turn and the rear tire skips 6" or so, it will really tighten your pucker string!
and i also agree with the choice of tire depending on several factors too. that's why i mentioned 2 different types of tire.
metzlers are a dual compound tire. i used them on my heavier bikes, like the 1500LC i had back in 99. you got good wear on the highway, and decent grip in the corners without creating a chicken strip. i use the avons on my smaller bikes that mostly do valley cruising on twisty roads. the tall skinny front wheel on my 900c, is nearly the same as what was on my vs800. the avon tires i used on them are softer because the last thing i want is that skinny front wheel scrubbing in a turn or under braking. if the classic didn't come with spoke wheels, i would have bought that instead, entirely because of that skinny front wheel on the custom
i don't think we disagree on very much, when it all comes down to it.