i usually listen by track instead of artist, half the time i'll find an artist with one good song and all the rest are just meh.
but right now my favorite bands are
5 Matt and Kim
4 Tokyo Police Club
3 Kyle Andrews
2 Strange Talk
1 Wilhelm Tell Me
also pretty good: Nero, Savant, Wavves, The Killers, Styx, Los Campesinoes, Zedd and Naked and Famous