i ended up getting these
http://cgi.ebay.co.uk/2-BT-interphon...item3f00b71813
the speakers are not the best you cant have mp3 too loud or it gets a bit rubbish but to be fair they can be played sufficiently loud... anymore and i would have ringing in my ears haha...
work pretty good as an intercom but can be a bit fiddly as the phone and intercom can mess up but they are less than 1/4 the price of the scala and looking online people are not keen on the scalas really...