I'm still on my first and using 8.5 x 11, but I'm ready to switch. I like the variety of papers available for the smaller size, but a lady at work just did a 12x12 for her honeymoon at AKL, and it looks great. She used mainly solid paper but then cut out pieces of the smaller papers to mount her pictures, and it looks so good! And she also didn't have to hack all of her pictures up to get more than 2 on a page. I'm going to go to 12x12 when I start a new one.