All the Tollys I have seen, and that's been dozens (including our old 32' sedan), were planing hulls. All the Gulfstars I have seen, and been on, or know of, are full displacement. Both are well built, honest boats. I have a soft spot in my heart for Tollys, had a lot of fun on ours and those of friends. But we recently supervised the survey of, and subsequently assisted the delivery of, a Gulfstar 44MY and I was very impressed on a number of fronts. Wouldn't hesitate to have one if going slow all the time was OK.