I'm sure the Spree is very good, but if I have an option between a vessel that takes 12 people max and another with 24max, there's no way I'd choose the later.
Also the part of being "extremely safe" sometimes turns me off, for sure raises warning flags. I like to be allowed to plan and follow my dives, some times charters cross the line between safety and overprotecting nanny.
I enjoyed the trip in the Juliet greatly more with John as Captain, because he allowed my group to dive pretty much our way after we presented our plan. By the way this wasn't any aggressive plan but was different than the proposed by the DM for that particular day. This happened on the 3rd day, so the abilities of each diver on board (whether good or not) were evident. John had the option to just say no in the name of "safety" or like he did, consider the request.
Again, nothing against the Spree, actually I've heard good things about that operation, just one person's preferences.
Not that I'm an expert on liveaboards, I dive mostly locally off my small boat, but after being in the Juliet, next time I'm going on a liveaboard, I rather go with them as long as Johns is the brain behind it.