Just got the AKG C520
I gave this mic a 4 because I have only used it once. It may well deserve a 5. I play keyboards in a hi-tech duo. The C520 allowed me to be free to adjust the mixer, look around, and overall have a ton more fun playing than when I was stuck in one vocal position. The mic is really hot so prepare to reduce the input gain. I did that acouple of times as I was overdriving the mixer input. But, once that was tweaked the mic was perfect. Great sound and overall I am very pleased. One thing that would be very useful would be a tap on/tap off mute feature.