I raised Havanas for a long time when I was younger. The first time I moved away, I gave the herd to my cousins, and they sent them back and gave them to my sister when we returned, so we've essentially had the same herd of Havanas for nearly 8 years now.
They are generally 4-6lbs and are just the sweetest little rabbits I've ever met. They may not come in lots of colors, but they make excellent mothers and are easy to show and raise because they aren't overly fancy. There aren't a lot of disqualifications, so it isn't as easy to get discouraged on the show table like other more popular breeds, but there is a sufficient number of very good breeders to get nice stock from.
I like them because they fit every market. They are large enough and meaty enough to be used as meat animals, sweet and small enough to sell or keep as pets, and they are fun to show.