Unless the power is the same you are comparing apples to oranges.
The 35 was an original Don Aronow design. The older boats were from Harry Schoell or Wynn and Walters designs. When Don designed the 35, he felt that he had achieved a perfect balance of length and beam. He put a good rocker in the bottom and turned the deck down in front for some areodynamic help in lifting the bow up without having to use trim to do it.
He was very satisfied with the result. However, the next two years in racing saw Joel Halpern win the overall championship in the US with a 38 foot boat......so right away everyone wanted a 38 footer to keep up with the Joneses...or the Halperns as the case may be.
Don felt that the 35 was like a little tight sportscar, that could handle the ocean and still be quick enough in the flat stuff. However the market was looking for the number 38....so, although the 35 was actually 35 feet and 9 inches, he did the minimum he could and stretched it only to 37 feet and 6 inches...and called it just that, the 37.6.
The first one was made for Jerry Jacoby called Ajac Hawk and it was first raced in Argentina in December of '78 with Bobby Saccenti throttling. This 37.6 was later called the 38 Top Gun although the other 6 inches were never added.
Boat for boat, apples against apples with the same power I would take the 35 in all conditions.
The 35 was designed to do something and it did it very well. The 37.6 was a stretch due to market demand and very much against the desire of her designer...he knew it would take a lot more power to get that thing to do what the 35 could do naturally.