I'm thinking about getting the
Innotraveler Car Kit from Sedio Online.
If you look at the pictures, the side buttons are clear of the holder.
The other pros of this one are:
*It comes with an optional air vent mount and pedestal mount if you don't want to use the suction cup mount.
*It charges through the holder, rather than you needing to plug in the charging cable on the side mini-USB plug of your BB (less stress on the connector).
--Ariel