We've timed Johnny and he eats his kibble in under 10 seconds. When we got him, we were worried because he was a grazer/nibbler but he changed and now gobbles it all down-FAST!
I've tried a tall, heavy ceramic cup so he has to get his head down into it and a shallow bowl that spreads it all out but haven't tried the bowl with "mountains" in it like this
http://www.petco.com/Assets/product_...463002656A.jpg http://www.petco.com/product/106954/...l-in-Blue.aspx
I've also noticed the larger kibble is easier for him to gobble down than the smaller pieces are.