like Bit said - LDC might, or might not be your friend.
Of the three you mention, the Rode is probably the most popular, but I think the A-T can give it a run for it's money. I was sadly disappointed with the M-Audio.
You might want to consider saving for a bit longer, I find that I use my Shure KSM-32 (around $500) almost as often as my TLM-193 (around $1500). Two very different sounds, to be certain, and two more price points too<G>! While I probably would not save till I could afford the TLM-193, I do find the KSM-32 to be a really versatile, and forgiving microphone.
Just keep in mind that as neutral as the Shure and Neumann microphones are, and they are very close to neutral, they still impart their personalities, largely because of the mass of the larger diaphragm. Neither the Rode nor the A-T are neutral, but that may be just the ticket for you? I'd call the Rode a bit forward, and the A-T a bit flattering, but these words are pretty useless till you get your hands on the microphones.