I use BBX with fair service in many marinas in the PNW. It works well in Oak Harbor, most of the harbors in the San Juans and certainly in Sidney and Victoria.
I agree that their equipment is expensive. I use a new laptop with it's own wireless antenna as my BBX purchased external antenna will not work with the Vista operating system. BBX were very concerned when I switched to Vista but they could not get their card type antenna to be recognized by Vista. They eventually gave up ans said I would have to get a new driver from the manufacturer of the card.
I admit that was about 8 months back and I have not called back to see if they have solved the problem. I can't be their only client with Vista.
I like the concept and the coverage is good. Just watch out with Vista machines.
Oak Harbor, Wa currently in London