I rowed for a bit on a trip we did down the lower Salmon. I have used the Carlisle Heavy Duty oars commercially for a few years. I felt that these were a little lighter in the hand than the Carlisles but more noticeably, they did not flex and bounce as much. These felt more efficient, but at almost twice the price I would probably stick with the Carlisles or save up for some nice Sawyers.
Just my two cents