I have seen both Cockers, and Field Spaniels in action, and I was impressed. Personally I perfer the Field Spaniel, but if your wife likes Cockers go for it. If she doesn't really know much about any of the Spaniel breeds however, I would say take a look at the Field Spaniels, and see if you could slip one by. In any case, all puppies are cute so,....

My understanding of Cockers is that if you want one that will hunt then you will need to buy an English Cocker, not the American Cocker. Also, and I'm sure you are well aware of this but it needs repeating, buy it from a breeder who breeds specifically for the field, not the bench.

Anyway, have fun, and let us know what you decide.