Any prepaid sim with US number like Piranha but with better reliability?
 

As in the subject. I would like a sim card with US number, worldwide low roaming rates for data and voice, long expiration or no expiry at all.
Is there anything like?

Late reply but in case you're still looking, check out Truphone: US# with good PAYG rates in "Truphone countries" (USA, Austrlaia, a few countries in Europe and elsewhere), not so good rates everywhere else.

Also you could check out Toggle Mobile.