Hi Pointy, I've never owned a Gramp 23, but am the owner of a Grampian 34 (currently for sale: www.elysian.ca
), and have been up close and personal with many other Gramp models. They are all tough, well built boats. Nothing fancy or prissy about them. Just solid and functional.
This being said, I would look for something slightly larger; in the 25-27 foot range. Standing head room, and enough space to stow a week's worth of clothes and food, mean the difference between camping
with a boat, and living
on a boat. It's not that you couldn't live with the small space (I bet you're campers/trippers, right?), but it will wear thin after a few days.
With your budget, and with today's market, there are boats in the 25-27 range available: Grampian 26, Northern 25, Mirage 26 ... lots more I'm sure.