if you are going for a pre-made burger from CM, the I'd have to go with the Bacon Cheddar patties. They use Pedersen's Applewood Smoked Bacon and the Wisconsin Mammoth Cheddar, muy bien. I also like their hatch chile burgers once a year, so much so that I've been tempted to have them make me a whole batch (50lbs) so that they'll use buffalo meat so that my wife will eat them, but instead usually make myself but not as good as they do.
CM has a good selection of pre-formed patties. I don't personally like so much going on with my burger, but for an occasional change of pace they are great. They also have some decent sausages. I regularly go for some of their chicken varieties as a healthier alternative to pork/beef.