I'm using Beyerdynamic now, so I don't think I'll try these, but it would be nice to have a comparison between AT mid-range mics and Studio Projects C4, for example. I wouldn't be surprised if all these AT mics (3031, ATM450, etc) all use the same (electret) elements. Maybe even the same one in the AT4033. If so, that is a pretty good capsule.
I'm amazed at how good the SP C4's sound, though. These are a tough mic to beat!
Richard