They are either ex Royal navy or commercial spec boats and generally speaking very well build. They have legendary sea keeping ability and a new one would set you back the best part of £60k. They are a little like the Land Rover of the sea so not everyone’s cup of tea but for those that do like them there is little to fault
. Having said that bigger and faster would be good.
PS this one that fell of the side of a frigate in a storm found later floating happily on its own