Pro Coil stability

[Detector Wars]

I went out a week ago, used my pro coil for the first time. I really like this coil because I had a good hunt. People have commented on the stability of the coil, some say it's not as stable as others. I found it to be a bit unstable, as if it's picking up interference (it's not a noisy area, been there with the WOT). I also found it to be sensitive, found small coins and some other objects that suggest it's sensitive and a good performer.

What are your opinions, do you guys think that the reason why it's unstable is because it's sensitive and hyped up... vise versa?