*Cheaper: pages, sheet covers, albums
*I already have a large box of sheet covers this size
*I get to use my sister's and others' awesome templates (there are more out there for 12x12)
*I don't have to crop 12x12 papers
*I like the square look of 12x12's
*You can fit more photos on the page (potentially spending less on additional pages)-- do you think that this is true????
*There's more room on the page to play with the layout
*There are more ideas on the web for layouts
Here is a comparison:
As you can see from my list, I am leaning towards 12x12, but that darn $$ thing. So, since most or all of you that read my blog scrap 12x12-- help sway me!