The waring Panini Sandwich Grill Press line-up is made of the Ottimo, Perfetto and the Supremo. The Waring Ottimo Panini Sandwich Press has dual grill surfaces that operate independently of each other. The grill surface is 8.25" x 9.25" and can be grooved or smooth top and bottom. One can purchase the Ottimo in a combination unit of smooth and grill surfaces. The Waring Perfetto has a grill surface of 9.25" x 9.25" and can be purchased as either grooved or smooth surface. And lastly, there is the Waring Supremo with grill surface of 11" x 14.5" that can be purchased in either grooved or smooth. When considering a Panini Grill, we always suggest that one buys the Panini Sandwich Press in a higher voltage because it will render a better product outcome, due to its ability to achieve a faster recovery especially when that is needed due to busy and high volume periods. One of the benefits about this type of sandwich press is the ability to mark the outside of the sandwich as well as making both sides of the sandwich extra crispy. It makes a great presentation and the crunch that everyone enjoys.