The prior posts in 2018 pretty much cover the differences. Note that when I went back to a 25/26, I could have bought a 26, having already owning a 25. I have ridden on several 26's, I have surveyed in detail, two 26's.
I also didn't buy a Ranger 23/27 outboard boat--some what for the same reasons.
For my use, I prefer the more spartan interior (note I believe that you can now get the more spartan interior on the 26). The difference in dead rise is so minimal, that I doubt that anyone can tell the difference in ride. If you want the best ride, with the same layout--then the Tom Cat is the boat.
Difference in dimensions is 4" more in the cockpit of the 26 (again noted in the prior post).
have a microwave and refer plus freezer in the 25. I have removed the bulkhead on the port side of the 25. For me, this gave a better boat for access to the berth.
I don't see the bilge in the cabin as an asset. My cabin sole is free of water. I have seen water in the bilge of several of the Venture 26. Boats. (source is an issue?)
If you don't like the 25, then I doubt that you will find much difference in the 26. More to the point, is what don't you like in the 25? The water capacity is very close to the same. The fuel is exactly the same, the HP is the same. The economy will be very close to the same. If the ride is an issue--then consider some modification of how your run the boat. I feel that Permatrims are almost essential, as well as the trim tabs. The 200 hp does better on both boats.
If you want a deeper V--and fancier interior, then consider the Ranger Tug 23 (closer to 27 or the 27, closer to 30, because of the outboard brackets). Yes the Sea Sport is a much deeper V--and requires more HP--they make some fantastic boats. There is always a trade off with deeper V--more draft, a bit different motion (more at rest in. a sea), more fuel, and perhaps a little more difficult to launch--less likely to go stern to a bank or shore--as the C Dory excels at. But a better ride. To get the best ride in a deep V you have to go above 22*--preferably 26*--much different than the C Dory, but the Tom Cat gives a comparable ride at least up to about 3' seas.