Make sure you get a PID temperature controller that has the manual output mode. (http://www.auberins.com/index.php?main_page=product_info&cPath=1&products_id=3&zenid=a1c9fd32ddcae06c5d613da105fd5457) That way you can set it to 100% power till you get to the boil and then drop down to ~70-80% (or...