I replaced my G224 with the GT-2531 and could not be happier. Awesome tripod. I love my G224 and used it successfully for years but I can afford a CF now and the lighter weight and the CF legs being not as cold feeling on the hands are big pluses.

That said although I've never used a 1 series I would not go with a smaller tripod than the G224 or GT-2531 with my Hassy.