I've got a Uniden Atlantis (non DSC) handheld, which I bought about 3 years ago new via Ebay. No probs at all, works great.
It has all the 'international' channels to choose from and I can't see a DSC version being any different, after all you are simply dialing out on a VHF channel.
Have a look at the US website:
http://www.uniden.com/products/produ...oduct=ATLANTIS