I haven't logged in to cf for quite some time now -as you can see from the latency of my reply, which I'm quite sorry- but let me answer your questions anyways.
I didn't purchase the 620 for several reasons; first being the 560 much more easier to control. Second, the 620 -after visiting one at the marina- seemed way too big for my needs. Last but certainly not least, when it comes to large luxury cats, there're quite a bit of alternates in the market today, all providing excellent comfort and by time I drifted to performance instead of volume.
All being said, I'd appreciate if you could let me know about your experience with your boat, since -although I'm leaned towards performance- big luxurious cat is still interesting as a purchase. I wish you and your wife all the best with your new boat and sail it in good health.
Best regards and hoping to meet for a cold one one day;