It looks like they updated the Hdb 12.5 design by adding a little width, and making it 6" shorter. The design seems to hit a sweet spot in size and weight, just like the mini max. If you are looking for a little bit more room, this may be the perfect boat. I have a lot of experience with the mini me from hyside, and I love the line of boats. They perform well, and are light and easy to roll while standing up to lots of abuse without issue.