major advantage using the largest muscles in your body. i have an outback. new at kayaking myself. the outback is very stable ,and a good yak all around. revo is a little bit more narrow and longer , which would probably give it a little bit more speed, but less stabality. less load capacity also. hobies are not the greatest in the surf, but with the peddals ,you can accelerate alot quicker to get through the danger zone. hobies can go out in windy conditions, that the average kayaker couldnt endure . hobies are expensive , but worth it. lots of accessories. if you can afford the extra to dish out , well worth it.