got mine a few eeks ago, and have only tried it twice, but it is slick as hell...only i am going to have to get use to seeing a deposit for a few bucks less then i billed for the % they take off. But i like not having to wait on checks from some of my commercial custys who have asked about CC...
email or text a receipt is nice to, plus it has a GPS on it incase they try argue if they where there or not.
I have an android phone so...i-phone or androids....dont know about Black berries