Here's a good comparison of the 4 big ones: http://forum.xda-developers.com/general/off-topic/coin-vs-plastc-vs-stratos-vs-swyp-t3056219 http://forum.xda-develo

Here's a good comparison of the 4 big ones: http://forum.xda-developers.com/general/off-topic/coin-vs-plastc-vs-stratos-vs-swyp-t3056219 http://forum.xda-developers.com/general/off-topic/coin-vs-pl... They mention that Coin doesn't support "Track1 data" which prevents it from working at lots of big retailers