I think it would come down to personal preference.... The scarab is probably going to be a heavier boat as the sunsation I believe comes in at 6500lbs. Will that equate to a better ride? Both are great boats with great lines. Did you check the nada value on both boats, which one held it's value better? Test run both boats in some rough stuff and get a first hand feel of how each rides in the conditions your use to running. Which cabin works better for you? Do the options vary? Wish I could give you more specifics as to why one is better than the other, but in my opinion they are very closely matched. I'm a taller person and the only negative thing I can say about the sunsation is it's not a deep boat and the head location was an issue for us. Otherwise, I think it's a great boat. Sunsation group are some great people and I've heard the service is great. As for the scarab, well, parts in the future can be an issue.