It wasn't necessarily an updated hull, it was a new hull. Different size boat.

I think both engines will be strong performers. They are both Indmar so I'm not sure I'd let that steer me one way or the other. The hull change is a more significant difference, though. Resale may become more difficult on the 2.5, if it hasn't already. I'd expect to see the 2.5 at a good discount below the 15's.

Another thing to consider is that I believe some of the 2015's will have autoflow, which (I think) can be upgraded to the Autoflow 2.0 plates easily. The manual flow found on the 14s is usable but I'd rate the Autoflow as a significant upgrade.