I agree wholeheartedly with your critique of the Grand. I sailed on her in November 1998 and the Sun in Feb. 1996. I am sailing on the SEA the week of November 11 and can hardly wait. The Grand was indeed a beautiful vessel, but awkward to get around and cramped in all the wrong places it seemed. We had a wonderful time but I found myself silently comparing her to the Sun much too often throughout the week. I am anxiously looking forward to the SEA - with so many new ships out I struggled with choosing between her and several others.
With all of this said, I would sail on the Grand again - heck, I've never met a cruise ship I didn't like (just some I preferred over others).