The stab-slabs seem to suffer from a very sharp increasing bouyancy curve - when coming down into the water they seem to reach a point very quickly where the reserve bouyancy overcomes the energy driving the hull down and forwards and they just stop in the water... Very stable at rest and safe etc etc but very sensitive to sea state and trimming/weight distribution etc.
Not my favourite tubs to work out of as others have said when you are underway, but fine for stability at rest. There are a reasonable number of boats around at the mo, your budget will basically dictate mid-age second hand so whatever you look at get a damn good going over done on it. Most places that set brand new boats up have their own particular ways of doing it, some are great some not so much. Find someone that knows boats mechanically and electrically and get a good survey report done on the state of these components including if the conductors are sized appropriately for the length of cable and the current they are drawing and also if the battery system is correctly installed. This can be a source of a lot of issues with modern electronics (insufficient power supply), especially once the dreaded green fluff takes up residence. Purchasing the boat is one thing, but buying someone else's cast off problems and having to then do an effectively full refit on the thing to get it running right will take the gloss off the purchase. A good report is not cheap, but a damn sight cheaper than replacing everything!
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