I like men to have beautiful rich voices. For some reason such music seems much more vivid and alive to me, and resonates more.
Hence I love to listen to Sam Michaelson over here (under Ethnic Songs: that's where you can hear clips.) I'm currently enjoying "Balbeli Oto" [literally, "Confuse Him."] But I have currently decided anything he sings is gorgeous. I like his version of "Just One Shabbos" even more than I like MBD's, for instance. [Hint to parents: I want more of his CDs!]
Josh Groban is a close second. He has a beautiful music video for "Per Te."
And after that, we have Il Divo. "Regresa A Mi" is one of my favorites.
My mother raised me well.