The ones in the engine room are analog and the helm ones are based off of the computer. It is common for analogs to not be 100% accurate and that...
What's your price range? For what you'd want to do I think 45' is a nice size. Cabo's and Vikings are what I'd be looking at. Searays are a great...
110v is still deadly, but 1/2 as deadly as 220volts. :D Your chances of living through getting electrocuted from 110volts are quite a bit higher...
The Hatteras 70' MY should run well in a head sea. Most of the Hatteras hulls shine in a head sea. I've heard the same sentiments with the 70'...