I have never used one myself but my old hunting partner has one that is pretty neat.
It has a wire speaker though, old one.

I am slightly considering buying one. I have always used my hand calls and like the mobility and lack of weight to deal with.

Got some Christmas money and gift cards though and I REALLY don't need another gun so I was kicking around the idea of buying a caller.

Any particular models that are better than others?

I assume FoxPro is the best brand?
Youth is wasted on the young.