In short, how would you compare these 4 boats with one another?

Fountain 24 CS
Sunsation Aggressor 24
Donzi Classic 22
Active Thunder Tantrum

From my research it seems both the Fountain and Sunsation are "small 24s". With all that said, which of the 4 do you feel would handle better in more rough conditions (although none of them probably too well)

Thank you!

AT will handle the rough a bit more. Also the classic is kind of out of place for comparison with those other boats but is a great and really fun boat.

Given those choices, Tantrum hands down.

^ What he said, Sunsation as a close second.

Out of those I agree the AT. And the AT is also a much bigger boat. The Donzi and Sunsation are actually very similar in size, with the Sunny being taller. These boats will be close in performance. I don't know much about the Fountain but I believe it is a 20-21* hull.

I've been in the 25 Sunsation in some NASTY Chesapeake Bay water; 4s, 5s, 6s. We were on a trip, following a 41 Velocity and the the 41 was only running 40 mph it was so rough.
For only being 23' 7" long, the boat did really well.
Had we known it was going to turn that rough, we would have just all piled in the Velocity.

But the 25 AT is going to be much better.

Don't even consider the other two for anything other than relatively calm lake boating. 24 Fountain CS: CS stands for "Competition Ski".

I disagree on the Donzi being a calm lake boat. The Sunny may be better, but it's only a foot shorter and can hold its own in rough water for it's size.

I believe the Sunsation, Donzi and AT all have a hull deadrise of 24° where the Fountain is something like 17°. Pretty much rules out the Fountain 24 CS for rough water.

The CS is not a rough water boat.

AT is a much larger and much deeper boat. With a swim platform it is amost 27'. It will have much better rough water ride.