The ARA is formulating a set of Ada tag lines:

       When blah blah blah...
           Choose Ada:
   The Most Trusted Name in Software(tm).

My favorite is:

     When your software has to fly...
             Choose Ada:
   The Most Trusted Name in Software(tm).

Another is:
     When there is no room for error...
             Choose Ada:
   The Most Trusted Name in Software(tm).

Or:
   When reality is more important than hype...
             Choose Ada:
   The Most Trusted Name in Software(tm).

Or:
       When lives are on the line...  (with a picture of a Space walk
             Choose Ada:                 and astronaut on umbilical)
   The Most Trusted Name in Software(tm).

I realize it is a bit long for a button.

Perhaps just the "Choose Ada: The Most Trusted Name in Software(tm)"
would be enough.

-Tuck