Hi
In my opinion you wont get much better than John 'JJ' Jackson. JJ is well known in the heli community and is an ex-military instructor/examiner. He currently works at Shawbury training military pilots.
He's type rated on the EC120, Squirrel, Agusta 109, Bell 206 Jet Ranger and many others. In the last few years Ive done over 50 hours of 'advanced' training with him.
I'll PM you also.
Joel