A review for 2.25" Round buttons by Joey Figaro.
I jumped on getting some buttons made during the promotion Button Frog was having -- and I jumped because it's made by the same people in charge of Sticker Mule.
They didn't disappoint. Buttons arrived much earlier than they were supposed to, and they're high-quality. The only thing I was disappointed in was the size of the buttons, but that's completely my fault. It looks like they even show the actual size of the buttons throughout the checkout process. I'd love it if they were a half-inch in diameter or so. Still, will purchase many times in the future. Can't recommend more.