my 8.5 x 24 is one of my most used rulers, and next is my 3.5 x 24. I don't own one in between, so can't say if I'd like it better. I do have a 6.5 x 12 that I use a lot too. I also love Creative Grids, and think they hold pretty well. I've been replacing all my other rulers with them as time goes by.