While the Rogers/Advantage is a proven design and has a slight edge over other v-bottom hulls, your Hallett bubble deck is the real deal and is a very under rated hull. There is absolutely no reason why your Hallett can't be a legit triple digit boat.
Pictured below is Place Diverter and Controls' Corporate Jet. Notice the dropped chines, which trap air a provides aerodynamic lift. Most V-bottom hulls do not provide any aerodynamic lift and are therefore less efficient hull designs. This is the Rogers/Advantage to have.
I would like to mention If Looks Could Kill, one of my all time favorite boats. This boat runs extremely well and the whole team is deadly constant. If Looks Could Kill doesn't have the dropped chines like The Corporate Jet (pictured), but it is a perfect example of a well executed combination.
1986 Advantage
http://www.socaljetboats.com/index.php?topic=28270.01986 Advantage
Regarding your Hallett, that is a very good hull. It can handle big power and rough water. The bottom of your Hallett and If Looks Could Kill are very similar. Again, it does not have any aerodynamic lift and is slightly less efficient than the Rogers/Advantage with the dropped chines. Performance wise, you will hit the proverbial wall roughly 10 MPH before the dropped chine Rogers/Advantage. If v-bottoms are your thing and you want push into the high one hundred teens, you really need to start looking gull wings. I do, however, believe that it is possible to build a gull wing killer if you wanted to start with a brand new Advantage.
If you wanted to share more about your current combination and goals. I may be able to help you make a more informed decision.
Cheers,
Joe