Palmer gets the best reviews on Amazon. There are two versions of it:
http://www.amazon.com/Palmer-Round-P...dp/B000NRQ4BE/
http://www.amazon.com/Palmer-Oval-Pi...dp/B000NRPNN4/
The Cuisinart version on Amazon gets really mixed reviews.
Oops! One more Palmer version on Amazon:
http://www.amazon.com/Palmer-Pizzell...dp/B000NKRWNA/