I never sailed a Grampian 30, but I looked at a few with the serious intention of buying one. My initial impression was that it was quite large down below, lots of standing room, but when I sat in the salon of the last one I looked at, I couldn't lean back to 90 deg. The back of my head was hitting the corner where the cabin steps down to the deck. I would have had to sit hunched over any time I was below decks. I'm 5' 6" tall (
There's an oxymoron!). I'm not used to bumping my head and I figure I'm too old to get used to it now.
So when you look at that boat, take a seat down below.
All in all, I liked the
lines and the layout of the 28 better. Just my personal opinion.
Some reference material here:
http://sailquest.com/market/models/models3.htm