If you do buy into a Medalist, don't forget to factor in the cost of 120 conversion. These cameras were originally made for 620 film, and require minor modification (best done by an expert, however, given the relative scarcity of the cameras in good condition) to use 120 directly. Once that's done, it would be difficult to find a 6x9 of any age or design that performs better, and only those with interchangeable lenses, like a Baby Speed with roll back, could be more versatile.

Also worth mentioning is the "accessory back" for the Medalists, that allowed the use of 6.5x9 or 2x3 (I forget which) sheet film holders and ground glass focusing. Even rarer than good Medalist cameras, but possibly of interest for certain applications, such as macro with a diopter attachment...