What of instrumental (or non-sung) music? Also, which are the vocalists you happen to like?
The bigger names that are my favorite vocalists: Emiliana Torrini(!), China Forbes (of Pink Martini), Beth Gibbons (of Portishead), and...um, hmm, David Byrne (of Talking Heads/himself). I guess it's a little more than just five or so, really, as there's also a few smaller names, too, though, from artists most nobody has ever heard of and that you can't really listen to unless you actually physically own their stuff (->me). Most of the artists that I listen to I'm actually just merely "okay" with - VNV Nation, Weird Al, Tom Lehrer, They Might Be Giants, Depeche Mode, etc. It's more that their voices don't actively bother me than that I really like them all that much.
Instrumental music is mostly fine - definitely subject to less arbitrary dislike than music with vocals. There are a few things that still bother me, though, and the usual suspects are brass instruments and electric guitars - however, the latter is obviously extremely varied in its usage, and so that's kind of hit or miss, too.
Ohh... I believe we had spoken about this earlier. I wasn't sure if it had been you or majestic with whom I'd spoken about vocalists and so on. Interesting that you should list David Byrne and Dave Gahan as two vocalists you like (on that matter I did include a Talking Heads album in the list - The Name of This Band Is Talking Heads). There's a number of albums in the list above that are either purely or mostly instrumental, with varying presence of guitar though usually used in ways other than the traditional rock forms. Plenty of brass though, in great part due to my love for jazz - but again, these can also be very varied in their use depending on what you hear.