I have a bunch because I'm a box call guy. I use them. I don't collect them. I have plenty that now look bad because of the use. Weather takes a toll. But again, I use mine rain, snow, sleet or sunshine. But they still sound great. So now, when it's rainy, I take the ones already weather beaten.
I'd say the majority of the birds I've killed have come from the hands of a box. I keep 2 in my vest (yes I have a vest with 2 box call pockets and won't consider a vest that doesn't). When I travel, I have 4 with me just in case. I've lost a few, still can't place where.
They all have a different pitch too. Box calls are the best. You can never have enough lol