I stayed up to date working on 6x8" PL in a weekly format for 2 years! (nearly a miracle for this habit-challenged person)
This year I decided to move to a bigger size but do fewer pages. I'm doing PL as and when I feel like it - if there's a photo I want to include I do. If I feel like making a "currently" card I do. No set schedule. I was worried that I would fill MORE pages that way but so far I've been more selective. If I do end up wanting to include everything once life gets busier again I can do one side of a baseball card page with 9 images or stories and that will be one more than I could fit on a 6x8" two page spread. So I should be able to get everything into one album for the year.
I'm using 8.5x11" which is imperfect, but a good compromise. I wanted to do 9x12 but I felt like I was being held hostage by SC's timeline (which was "soon" for months!), low stock levels, and their proprietary ring system, forcing me to exclusively deal with them for page protectors. No thanks. They're a good company in general, but I want to have more options.
I'm frustrated because 9x12 makes so much sense - you can put a 4x6 next to a 3x4! 12x12 had never been an option for me, space-wise.
But 8.5x11 is working fine and I can print full pages on my regular printer and never deal with 12" paper (I have storage issues and hate those big sheets). White cardstock all the way.
I am including PL, One Little Word and Story kit based (hybrid) layouts in this binder all together. I haven't made layouts in forever, so this is a fun new direction, doing layouts for the themes and stories I want bigger, and PL cards for the small stuff. And because Letter sized binders are standardized I can buy protectors from amazon that are meant for trading card, coin and currency collectors. I got a page with three 3x8" pockets which I'm trying for medium sized stories (I don't do layouts with one tiny photo on a big page of white space - not my style). And I've found some templates to use to make Letter sized pages. So far, so good!