What follows is written in a friendly tone of voice and only to help you consider something. I don't claim to be an expert on this topic, so take my comments with a splash of saltwater. However, I have spent a lot of time considering which type (mono or multi) to get and why and this has influenced my comments below.
I think the budget
and your boat choice (which particular boat and size and condition) are most important for a good decussion on this topic.
Because if your budget
is low, you will be choosing between old boats and on the catamaran side it may not be possible to find a suitable cruising boat. For example, if one is limited to just $75K, I think one could find a clean, nice condition older monohull
, that could take one around the world. But, that same budget would restrict one to an older, smaller, catamaran, if one could find one in the price
If you have a large enough budget (and I suggest posting
the maximum "asking price" you would consider) then it helps define the available options.
IF you have $250K or more, then I think a catamaran (e.g. Lagoon
380) would probably be more comfortable for most people in most locations for most typical coastal cruising.
But, with that same $250K I could pick a real strong, big, "blue water
boat" that I would feel comfortable taking to extreme locations, and around the world, and it would be a monohull.
So, I think to help you, it is best to define what is possible (the asking price
limit) and where you want to sail, and if you plan on living aboard
it permanently, and if you intend to have more than just yourself on the boat, etc. Those things matter, as I see it.
Good luck on your choice.