With my shielder/thrower guy I hate when I got a nice bead on some Xbow man reloading who doesn't see me there, then 'thunk'- shot cancelled, the guy hears it and runs away. On my two hander guy I really, really hate it when I sneak up behind a similarluy oblivious guy then 'Argh!'- a big (ok, not that big) chunk of my life is gone, I'm stunned, and the guy hears it and runs away.
On either guy I love it when I'm spacing out, and suddenly I hear either a 'thunk' or an 'argh' behind me, and am able to spin around and (potentially) save myself. So friendly ranged good, enemy ranged bad. I said it before, I'll say it again, "Buff friendly, Nerf enemy".