i've found the 603's to be a little too hyped in the highs for my liking for use as overheads, but obviously some folks use em to great results. i've found the 603 to be an excellent close mic for snare (and i would assume toms, if i had more of them) as well as cymbals (got one on my ride right now, actually). i've used the 603 both over and under the snare and it handles the job quite well.
i have had quite good results out of the V67 as an overhead. i think i need a 2nd one, but i really dig the mono drums i'm getting with it at the moment. there's just something about the sound of the V67's midrange that's pretty nice for getting the meat of the snare without too much hihat or cymbal shrillness.
i've also used the V77 as an overhead, but i admit that i like it a lot better in front of the kick.
cheers,
wade