I got a Mike Yingling 3 inch copper dyed stabilized ash in the mail today...kicking myself for waiting this long to get one of his. It is all turkey! Super easy to run, excels (in the 15 minutes I played around with it) with soft stuff, but will absolutely scream if you want it to paired with the right striker. To top it off, it is a fine piece of craftsmanship.
I have had one other copper call before this one, and have run several, but this one really is the best sounding one I have run.
As for strikers the fiber rod striker he sent with it is really versatile and does really well on the call. It also ran well with a few other strikers I had upstairs with me. A Neal Hermann persimmon sounded great on it, and so did a JLH tail feather striker. My favorite striker on it was probably my Neal Hermann gaboon ebony, followed closely by the fiber rod striker that Mike sent with the call.
I probably could have just left this post at this...get one of Mike Yingling's copper pots because you will not be disappointed.