Re: 45' + blue water cruiser
I am in the middle of writing a book about long distance cruising based on the experiences of people who are doing it. The remarkable thing is the wide range of boats you see in obscure places in the Pacific or Indian Ocean. There is no make or model that you see a great many examples of.
Don't know your budget, but I get a sense you do not have a great deal of experience in this regard. Having said that, if I were in your shoes I would widen my search substantially. I would not buy a new boat since you are unlikely to know exactly what to ask for. Rather I would look for a boat about five years old that has been set up by a knowledgeable (and rich) owner. I would look first at higher makes like Amel and Halberg-Rassy. With five years' depreciation I suspect the price might be similar to a new Catalina and these boats are certainly better in my opinion.
Interestingly in my research many monohull owners with boats in the 45 to 50' range say they would like to have a good catamaran around 45' if money were not an object. This is interesting considering that these are people with 10k to 100k miles of cruising experience.
Heading back to Lake Ontario for this summer. Relatively few stops along the way from Grenada. Martinique, Guadeloupe, St. Martin (must have something to do with the French food), then Bermuda, New England and up the Hudson/Erie Canal. We were going to go via Newfoundland and Labrador but June remembered that one of the kids is getting married this summer - details, details!