Constructive criticism is the best kind of criticism in the world; it says someone cares enough to help me with his opinion.
If their hidden motive is I am better than you than their opinion has no value and should be treated as such.

When I came off the bandstand I searched my friends for their opinions -- I really did not want to hear how great I was my pride was doing a good job with that one.(grin) I wanted to hear where I could improve, how could we do it better.

John C.