I bought a set of David Clark H10-40's for £60+£10p&p. They were a great buy! The microphone is very clear, very loud - the noise reduction isn't as good as ANR headsets however it is almost dead silent and I do like to hear a bit of engine. Suprisingly the headset doesn't clamp on my head at all, they are light and therefore comfortable to wear.
To increase comfort I bought a new headband that is a huge cloth encased foam pad:
http://www.flightstore.co.uk/david_c...163.dept_l3.0/ I bought it when the january sales were on and they were £2.95... TWO Pound!

Never looked back absolutely fantastic purchase.