Catboats are popular in the greater Cape Cod area. I'm not sure about other areas.
Catboats of any size tend to be beamy, stable, and comfortable. With no jib, they can not point worth a darn. Not a bad idea to have a motor for when wanted. Picking a horsepower for a sailboat is a bit complicated.
Salt Water New England posted the pic below of a Marshall 22 quite close to the (not under power, I assume, or just holding in place) Queen Mary 2 somewhere in New England. Marshalls come with a diesel engine.
If you ever have the chance to take a Cunard liner across the Atlantic, do it. She is a true ocean liner, not a cruise ship. Today, the Queen Mary is at dock in NYC, due to leave for Hamburg soon.
A sail on a catboat on a breezy day is is good too. Marshalls for sale here.