I've had both, but like my 03 Response LXI better. It's a little smaller, and probably because of this, it's easier to maneuver when getting the rope to the skier. Plus it can do bat turns. Also, doesn't make sense, but it worked better for surfing. Probably because the Sunsetter LXI had the lower rear portion of the hull cut out, so wasn't able to stick a wedge there to redirect the prop wash for surfing. And finally, I like the wake better on the Reponse lxi, even though the wake was fine on the Sunsetter. The extra room in the Sunsetter was nice however. Both are great boats.