I know you guys here are obviously biased towards sailboats but whats your opinion on displacement fuel efficient motorboats for long term cruising, I would think the overall operation costs and maintence would come out to about the same......
I suspect that since you're posting these questions on a sailing forum, that you and your wife may still be at a decision crossroads as regards to s/v or m/v.
However, if you have decided to go power - why ask sailors who will surely only provide biased recommendations?
On the other hand, I selected a well designed motorsailer that provides more variations, enabling us to sail at near-hull speed, motorsail when going to weather, or motor only at 8-9 knots. Your budget is somewhat low for that option however.