>>I am about to recommend a text book on Ada95 for a
>>course for experienced Ada83 programmers.
>>
>>So far, we have pruned down to two main contenders,
>>Barnes and Cohen. Does anyone have an opinion?
>>
>Cohen has more depth, and a nice feature at the end of each
chapter -- a
>summary of the differences between Ada83 and Ada95 for the material
covered in
>that chapter.

Have you read the second edition of Barnes' book?  The difference in
depth is not what it once was.