I'm coming in a little late here, but I just smoked my first brats this past weekend.
-I soaked them in beer, some hot sauce and onions all night.
-Smoked them on the WSM till the internal temperature was around 165-170.
-Sliced them up and served them to snack on for lunch.
-I had 4 different sauces. (Honey Mustard, Horshradish sauce, orange BBQ, Bone suckin sauce) Hands down everyone loved the honey mustard sauce the best, with the orange BBQ sauce 2nd.
They were good, but I'm not a sausage fan so I don't have a discriminating taste for this sort of thing.