We hit up Uli's this weekend for a variety of their brats. I hadn't been there before, so I picked up a variety of links -- Louisiana Hot links, Italian Hot vesuvios, Cajun Andouille, etc. etc. All in all, we tried five different kinds.
I grill sausages, and I despise those that cause an inferno due to a little grease. For me, if you can grill a sausage without major flames, it's a pretty good dog/sausage/brat. That was the case with Uli's.
I'm a flavor and spice guy, so the Cajun Andouille's were my favorite. They have a bunch of mild sausages for those that like to avoid the spice, but I highly recommend the spicy kind. They have the flavor to make up for it.