If you plan on the skipper sleeping in a coffin berth (oops, sorry …. I mean crew berth) then he/she might have some input. I've chartered both and don't really have anything bad to say about either choice. Since your skipper will be operating the boat, I guess it comes down to comfort and accessories (and price), along with location of the charter company. For simply socializing I lean toward the Bali 4.5. The bow has a larger sitting area with tables, as well as a large drop-down window between the salon and the bow for passing snacks, drinks, as well as communication between those in the salon and those out front. The Lagoon has a couple of small windows that can be used for the same thing. The stern of the Bali has a drop-down swim platform, whereas the Lagoon does not. I found other 'creature comforts' to be similar.