My experience with "sticks" is that they encourage a faster cadence and that can lead to unexpectedly running out of gas. It kind of sneaks up on you--or should I say, me.
One of my Greenland paddles has a certain degree of flex in the blades that absorbs some of the strain and feels good sometimes. It's nice for a change once in awhile, but when it comes to maneuvering, I'm much more comfortable with a Euro.
I have yet to try a wing.