Which reader is best for my practice ?

[Shacaralyn]

I own a small crystal business, we’re I travel to different places for markets, I have the mag strip reader now but it sometimes has to be swiped more than once to go thru, I was looking at the terminal so I can print receipts but don’t know if it best. 

[jjgard]

I think the Terminal would work very well for what you're describing.  The battery life is awesome and it should get you through an all-day crystal selling session at the market.

I highly recommend Square Terminal.