Thought I'd better clarify my previous post.
NicoleCastle made a good point. I do not use my AKG C1000s on my vocals, I use it as an "instrument only" mic. I use a good dynamic mic for my voice as I'm not thrilled with the sound of condensers as vocal mics in "live" concert settings.
The C1000s is also not my favorite overall banjo mic but I still favor it in "live" settings because it is so feedback resistant. I love the tone of the Sm57 as banjo mic in the studio (because of it's limited high end) but it is too prone to feedback in "live" settings to be much use to me.
I guess the point is that a mic might not be of any use if you can't get it's volume up loud enough to compete with a pickup in a "live" setting. My AKG hypercardioid has given me enough volume to do this.
Just some thoughts......Mike