Okay Im looking into buying a new headset now ive gone commercial.. Was
looking at standard sets but have been advised by many save up a little
more and get an ANR set (thanks guys

Some people strongly reject anr because you cannot listen to the
aircraft as good as without anr.

Just a question regarding pricing of these sets. I require a set for use
in helicopters but why is it, heli sets are more expensive than the GA ?

helipilots are much richer ;-)

shouldnt the chopper sets actually be cheaper considering they only have
the one NATO plug??

Are there any other differences ??

Heliplugs have only 4 contacts therefore only mono sound is possible.
GA-Headsets often support stereo now. If you want to use a stereo in
mono in a copter there might be a little more effort to build an
adapter.

I like my (simple) Avcomm headsets. It came with two cords which have a
little plug that fit into the headset. One coiled for heli and one
straight, two-plugged for GA.