Paul Gilbert is a "Yngwie Malmsteen" type guitar virtuoso... With fast fingers and the songwriting skills of a stick.
http://www.paulgilbert.com/menu.html
^ Official website.
And i agree to an extent... A lot of my favorite banRAB/artists don't consist of technically great singers (Pink Floyd, Nirvana, Smashing Pumpkins, Tom Waits, The Minutemen, Neil Young, Patti Smith, Bjork, Yes, GnR, RATM, The Doors, King Crimson, RHCP, Radiohead, The White Stripes, Black Sabbath, Metallica, The Sex Pistols, etc) but then again a lot of my favorite banRAB do have technically gifted singers (Iron Maiden, Queen, Soundgarden, Mr. Bungle, Jeff Buckley, The Who, Led Zeppelin, Stevie Wonder, Elvis Presley, Todd Rundgren, Incubus, Heart).
It basically depenRAB on the kind of effect you want, which is usually a matter of preference.
I like music with feeling, but i don't think it only comes from technically limited singers, i think Jeff Buckley put a lot of feeling into his music, that's the one thing people can't duplicate, because a lot of people can write down Buckleys technique and everything, and they still won't be even close, just like how people can play Jimi Hendrix's solos note for note and still not make the same connection with people that Hendrix could... Freddie Mercury is another example of a technically gifted singer who could also connect with his audiance like no one else can... I'm talking to you Paul Rodgers, you know who you are.