Setup sensative means that the builder needs to be very careful to follow the suggestions/instructions of whomever made the hull. The strut/stinger placement and trim angle, the placement and angle of the rudder, placement of tabs...etc.

The WareHouse Hobbies are probably the most user friendly, then Aeromarine Laminates, AC Modle Boats, and Rico (remember the Aeromarine XXX and the AC are the same hull).

It's really all down to what you want and how and where you will be running. The Rico, Aeromarine, and AC hulls will be tough to beat with stock Zennie power and a nice set of hardware.