Captain Nemo - you are right. Basically looking for a bundle which comes with 2 Radios and some headsets and preferably voice activated. I have seen one on the Costco website over in the US -cheap and Cheerful
http://www.costco.com/Browse/Product...v=&browse=&s=1
A couple guys selling the same thing on ebay for £50 which could be an idea but don't particularly want to buy something cheap if its going to be rubbish.