Depends on how you define best….if your “new” to pot calls…I’d highly recommend slate over glass in a 3.25 or 3.5” pot ….. super easy to use, different tones are easily achieved by using edges vs. center, you can add different strikers and get completely different sounds.
As others have said so much goes into a call from the quality/type of wood for pots and strikers to surface and soundboard materials.
I have never called in a bird with something ‘fancy” crystal over aluminum in snake wood pot with ebony mun striker (don’t ask how much that cost[emoji15]) that didn’t respond to slate over glass.
Slate doesn’t work well if gets wet, thus aluminum, brass, glass, surfaces…but I do believe those surfaces are not only a little more difficult to work well, they are also the most impacted by the pairings of pot/striker wood and sound board…basically more finicky…whereas slate over glass is virtually fool and fail proof.
As far as brands that I used before I began to build my own, that I would actually recommend….
Ed Jenkins -Ghostmaker Calls
John Sinclair
In that order….both call makers do excellent work. I feel Ed’s calls are built with much more of a personal touch and focus toward performance as opposed to aesthetics.
Hope this helps