Hmm, are the AT microphones pretty true to the source? Do they sound "natural"?
You should not need to worry about room noises while recording as there are MANY software that can filter it out after the recordings are done (takes like 30 secs max to filter them out).
I recorded vocals with a Neuman U87 today (if I'm not mistaken). Any experience with that microphone? Pity we ran out of time to record with another Neuman microphone and my Heil PR 22. I'm not sure if the U87 had its bass rolled off but although it really captured the details and was really clear, my voice sounded lacking in low-mid and bass.
NTK one word - warmthhhh heheh. but a heavy mic to deal with if your mic stand is not sturdy.