Just ordered some Will be here in around 4 weeks http://www.tradediscountshop.co.uk/?s=silent&post_type=product
I was chatting to a guy who sells and repairs compressors and he said apart from the ones in a cabnet design for work shops which are not very portable You can't get a silent compressor that can handle a pneumatic nailer There all to small like the bamby which is designed for dentist tools