Look man, I know a USB cable can power AND carry data simultaneously but this has nothing to do with a microphone and its quality. If you really want to get into this, I'm an audio engineer...
There are insanely high quality mics that require no extra power. Also, what I listed as being the "best" option in this realm of recording really is the "best" option. The Heil microphone uses XLR inputs and that's why you get the mixer for the phantom power.
You cannot compare a USB (digital) microphone to an analogue mic signal in the way you are. It just doesn't make any sense.