desperately seeking mustard

We're having a party on the 18th and we'll be serving bratwurst. I want to serve some good German mustard. I had some once that sent me over the moon, but I don't remember the brand name, dammit.

There's this place called Old World in Huntington Beach. It's sort of a mini faux German town. The woman I talked to there said a few of the brand names they sell Haendlmaier, Kuehne, Inglehoffer, Loewensenf, Thomy, Hengstenberg, Landsberg, Alstertor and Hela. Have you heard of any of these? How about any other brand names?

Thanks!

"Old World Huntington Beach offers unique “Old World European” dining, shopping, entertainment and special event experiences to Southern California locals and tourists alike."

http://www.oldworld.ws/