So ...Offshore= mid-range 30-70miles? Canyons are well over 100 from the Cape.
So obviously, bigger hull is always better if you can afford the boat and dock and everything that goes with it.
Brand new is better if you can afford the boat and dock and everything that goes with it.
Are you thinking new or used?
So your question comes down to Center Console, Bowrider oh I mean "Dual Console", or Marlin walkaround with cabin. Unfortunately they don't make 30' Express anymore
Personally I would scratch the bowrider for offshore....meh...
The Marlin is the most comfortable and has storage and a place to nap. Best trolling machine of the three. best choice for hanging out in the marina with cocktails ("the boat" can be a destination as well as a vehicle)
They will get you home on plane in 3 to 5.
The CC is the smoother ride for the guys in the helm seats. Easier to handle alone or with inexperienced crew. Not a lot of foot room behind the helm seats for what you pay IMO.
Great choice for fast offshore day trips in flat weather. They can be run faster and wetter than a Marlin in 3' to 5'.