Tony,
The one I ran belonged to a friend of mine, which he bought new in '98. I usually ran her whenever I was aboard, with the notable exception of when he put her up onto a rocky reef at cruise speed. That stunt stalled both engines, bent the props, shafts, stuts and rudders and took big chucks of glass out of the bottom, but examination in dry-dock showed us that she was one TOUGH boat. Incredible hull thickness. $27,000 later, she was as good as new.
When I wasn't fighting my way to the helm, I was cruising nearby. Here she is keeping up with me at 27 knots:
Note the running angle - not bad for having massive Detroits that close to the transom! There was plenty of headroom for me (6'). Earlier models had a lower fwd bimini.
I'm not a fan of walk-though windshields, but of course, good sidedecks are required. The 500's are great - wide and safe, except for one styling issue where the deck lowers at an outward/downward angle below the leading edge of the arch. (fuel filler location on stbd) That's a bit tricky if you're not looking for it. I broke my toe on the lip at the transom door. Got one of those dorky steel flip-flops as a reward.
Cave? Yup, it's a cave. It's a nice salon though. Even the bigger Sundancers don't have a seating arrangement as good as the 500. Sitting in a row never makes sense to me, unless you're waiting for a bus or feeding pidgeons.
This one had a large platform, and I'll be surprised if you have to look hard to find another example with it.
The guest stateroom can sleep 3 comfortably - the lower bunk is quite large. If you have boys, you might appreciate the arrangement of the guest head. It shower shares space with the MSD, so it's "passively cleaning".
I've been looking at boats with 3196's, and it makes me nervous. They seem to have a handle on the aftercooler issues, but the whole lawsuit issue and docktalk seem to be affecting resale.