I started with the pro petite pack & switched to the regular pro pack after a few months. As a subscriber you also get a discount in their shop. Mo sends surveys out after each month so you can provide feedback. They really care about what their customer wants.
To the previous reviewer who found stickers cheaper, I'd like to know where they get them. I've driven all around the Portland area looking for stickers and they are hard to find with limited selection. Pipsticks has a unique collection of stickers available and they come straight to my mailbox! It doesn't get any better than that.