Attention everyone, the current first place audio technica AT2020 is NOT a USB mic. Please vote for the Audio Technica AT2020USB PLUS, which is simply the USB variant.
The Heil pr40 and Procaster aren't USB mics but are good. In the USB category, I'd also consider the ATR2100USB and Samson Q2U for dynamic mic options. And in the non-USB category I'd include the AT RE320, RE20, EV BP40, and Shure SM7b
i feel like the relatively new rode NT-USB is underrated, sounds comparable to the at2020 usb+ and i prefer it slightly. However i am in Australia and this poll is over the most affordable, so i guess those further away would only be able to get the RODE mic at a much higher cost than me. All in all, if one was going to shop around the rode NT-usb has a smooth tone which may please the ear and is well worth the consideration.