Get the Werner Bent Shaft
I have tried a lot of paddles over the years...carbon blade, glass blade, carbon shaft, glass shaft, straight shaft, bent shaft.
Carbon blades: A complete waste of $. They wear down too fast. The blades are black so they are easy to loose if you swim.
Straight shaft: Old school. Not ergo friendly.
I highly recommend getting a Werner carbon bent shaft with glass blades (get a bright color). Bent shaft feels very natural once you get used to it (1 day on the river) and you will never go back! The carbon shaft will save a little on weight. Also try a shorter length paddle. I have found this really helps to get your stroke vertical, both Creeking and at Play. I use a 196 (5'-11").