Just as a FYI, the AT2020 is a very nice mic and gets very good reviews. It is NOT a large diaphragm condenser. The capsule size (16mm / 5/8") places it firmly as a mid-size condenser. The confusion abounds because it LOOKS like an LDC.
Here's a quick review:
http://recordinghacks.com/microphone...echnica/AT2020