Daniel,
Thanks for your advice.
At this point I think 42' (the 423 is actually 43'2" LOA and 38'7" LWL - so I think it may be a big 42' ) will be plenty big enough for us. No plans for anything bigger but I will probably retract this statement in a couple of years

I feel that the extra $50K for a (older) 473 will buy me a lot of Pyrate rum.'
Interesting about the pounding and the motion. Will try to find out more and take into consideration. I just think that going from 30' to 47' might be a big step.
I have skippered 40 footers and feel (relatively) comfortable with this size. Not sure how comfortable I would be with a 47' boat. I guess it is just a (steep) learning curve.
About the C470 - checked it out at the boat show, incredible amount of storage for a production boat, I hear you about the pullman berth, but the master statesroom is aft below the cockpit, and it is HUGE! The headroom is quite a bit more than the C400 and my wife can nearly sit up in the bed (can you tell she is focused on the sleeping arrangements?

)
The C470's draw 5'9" which can be a problem in some areas of the Chessie. I have friends with 5'6" that have to time the tide to get out of their marina, hence 4'9" is attractive (despite adverse affect on performance)
CD,
Yes - if we go to the bahamas a watermaker will be installed. The Irish chick just left for a last minute business trip and she said "Let's go in June instead of September". I guess I am one of the lucky fellas who's wife is more gung ho about this than meself

Not sure if we can pull the logistics of in time though.
Cam,
About storage - this is one thing that appeals to me very much about the older, blue water cruising boats. I am just not sure that I want to deal with wiring and hoses from 1981

And, I'd rather sail than sand... Mind over heart or whatever it is called.
Anyway, regardless of boat choice, it is looking very attractive to bugger off down island in 2009 and wait out this recession and come back when the fan has stopped spinning and the sh$te has settled on the ground.