My grandfather used a Fox 20 ga for grouse and woodcock hunting in northern Michigan. I believe his 12 ga was an Ithaca and he used that for pheasant hunting, primarily in southern Michigan. I have little memory of the Ithaca. He had several other shotguns, one being a 16 ga Remington model 1100. I know he duck hunted and I dont know which gun he used for that.
I remember my grandfather taking me grouse hunting for the first time when I was about 12 (1959 was a while ago). It was at our cabin in northern Michigan and I recall being extremely proud that he was letting me use his revered Fox 20 ga. The engraving was quite extensive and I would guess it was maybe an XE or DE. To my recollection I never hit a thing that day, but it did start a love affair with grouse hunting that has continued for the last 50 years.
My father did not bird hunt and sold these guns probably 35 years ago. I have lusted for a higher grade Fox ever since then. I have toyed with the idea of purchasing a CSMC Fox for the last decade, but every time I talk myself into it, they raise the price again and I put off the purchase.