Bluewater boat comparison
The perfect blue water boat is the one you have and leave with
But realistically there is a balance between the heavy go no where boats and too light and racey to be sailed without a full crew.
Key factors are $$$$
Look at boats like; Passports, Moodys, Hallberg Rassey, Valiants, Shannons, Taswell, Amel, Westerly etc. they are all different but designed as Passagemakers once you are over 40 feet or so. Sail them and figure out what works for you.
Remeber speed is good as long as you are comfortable. and extra 1/2 to 1 knot average can cut hours if not days off and extended passage.
BTW I just went through this and ended up with a Moody 47 [older 85]