Whichever brand you choose, I'd recommend getting one that's pure slate, not glass, crystal, metal. I've tried many, and I always go back to my pure slate Paul Butski. I don't think they're made anymore, but it's the sweetest, most realistic friction call I've owned. I see that Cabelas has a Primos that's pure slate which looks identical to my Butski slate. It's only $15.99, and I'll bet it sounds better than all of those high dollar calls.