Let me say it this way.
It's not the camera takes excellent shots. It's you.
I'm rather experienced photographer and this is an advice i may give you free of charge ;)
Nah, just joking, but there's no joke saying you (not the camera) are respon...
Virtual Recorder does a quite good job whilst I record my band's rehearsing. We play freaking loud but VR has got a preamp control so it may work well on live gigs as well.
in the market search for VirtualRecorder
Hope this helps.