Least favorite pot call surface.

[wvmntnhick]

I love my copper.  Least favorite is anodized aluminum.

Ditto this.

[sixbird]

I think my least fav. is ceramic. Just never heard one that made me go, WOW!
I see a lot of guys don't like copper. I have a Scott Vieting (Bearded Hen Calls) that is consistent and, paired with a Hollaran one piece Ipe striker...Yikes, that thing can kill turkeys!
And I'm not a fan of most copper calls...

[merriamsman]

Not a fan of stoned aluminum - much prefer sanded or anodized. I love my Scott's Custom Calls copper pot paired with his acrylic striker - that call made more turkeys gobble this past spring than any other call in my arsenal.