Hehe yeah same thing 

Nice, I doubt you will be disappointed.

as suggested above f/g boats are most usually preferred by females - and if you want their company it is definitely a serious consideration.

4 adults+4kids will be a bit of a circus on any trailerboat, so i doubt youll be doing it too often.

if overnighting is important - uninsulated alloy boats are cold, wet and noisy compared to glass.

i think you can discount the surtees straight away - although very strong re-sale is attractive.

Rayglass has a lot going for it - but they are built like tanks - they love hp and burning hydrocarbons. No options with seating as its all molded in.

Southern Lazer - i like them a lot - seemingly the best of both worlds - possibly the best boat of the bunch if you desire to go to windward quickly. The hull shape has changed a bit over the years - and the older ones Gen1 and 2 ? can have some disconcerting behaviour running downwind. The newest ones have a fine-tuned chine and lifting-strakes which apparently have made them settle down. Ask Andrew Carlson @ Family Boats which ones are to watch out for.

HH660c - very popular at the OBC - youll be one of the 'in crowd' if you get one. Still a current model from MillerMoyes - so even if you get an old one, it doesnt look out of date. Quite big for a 6.5m boat - full forwards with a big cabin (get MM to re-upholster the cabin squabs - the foam they use is too thin for a nights sleep) and plenty of beam. A bit thumpy into a chop because of it - but prolly not the end of the world. Seating is all modular, so you can chop and change depends on what the mission calls for. Light for its length, so fast and frugal even with one of the older 225s. 

Most have the yamaha 3.3l motor on the back from the factory - many which had exhaust manifold problems - so check this out