Bogner Meats is an awesome butcher store/meat market with retail stores in Manchester and Vernon, CT. In addtition to a huge fresh meat case, they also make several varieties of their very own deli meats (like Genoa salami and pepperoni.) And they also have their very own brand of natural casing beef and pork franks, made by Hummel of New Haven to Bogner's recipe.
Bogner franks have an excellent meat flavor thanks to the beef and pork blend, with mild spices and just a hint of smokiness. They seem to me to have a little more coriander in the seasoning blend than some other franks, but they compare very well against my favorites, Mucke's and Grote & Weigel.