Can anyone reccommend this?
The price is right.

http://www.mandp.co.uk/productinfo.aspx?catRef=533705

I used to have one of their first intercoms - not bad for the money but it wasn't a patch on my Honda oem system which had vox. I would imagine it is good value for money as they have been around for a while now.

I have an old graytronics noise canceling comms box if its any use?

You would need to find some headphones to suit...but might do the job..

I'm building my own
My bro bought me some Terraphone headsets a few years back...
Intercom is going to have Stereo headphones, mp3 player input, adjustable mic VOX (overrides the MP3), the whole shebang....
Just got to spend a while drawing up the PCBs and making the thing...

Got a brand new Starcom 1 system surplus now, all complete £75 and a bit of post, Alan

[Edited on 17/2/07 by blue2cv]