If your second pizza isn't as crisp as the first, you are either not getting your pizza stone hot enough or it's just not a good stone. I have a set of something called the Dough-Joe that cooks pizza as well as any pizzeria, but the downside is it comes in four small pieces instead of one. The company said it helps to avoid broken stones which I guess makes sense and it doesn't really slide around much on my oven shelf. I preheat it to 550 and let it sit for 30 minutes after the oven reaches temp. Wow do I get great crust. They're 3/4 inch x 6 x 9 stones and have raked bottoms.