The C3000 is not a bad mic at all. I've used it on a couple of occasions to mic live performances for recording, and the recording have come out fabulous!
A lot of people rag on this mic because they use it to try to record vocals, and their recording comes out showing the "true" sound of their voice! Then, they hitch up a "vintage" sounding mic and go "WOW!". What you're hearing is the mic coloring the sound. That's not a bad thing! You just have to know when to use what mic. I would not mic a live performance like a choir with a Rode NT1, but I wouldn't hesitate for a second to mic a vocalist or guitar with it. That's what it's good at.
The C3000 is a great mic as a live mic, overhead drum mic, guitar cabinet mic, taper mic (live concerts), etc.. etc.. There are just as many people raving about the C3000 as are ragging on it. That should tell you something. As always, your ears are the best judge.
J.R.