I just ordered some from these guys for my A4...they are supposed to be great quality and the company has been great to deal with so far
Currently: 2002 C5 Z06, 2009 335i, 2012 M796, 1976 XS650
PM me for your sidewinder (laser cut) key blank and cutting needs. Have OEM pre-ews keys and replacement shells. Can do (almost) all BMWs up to 2008!