I've tried them all and used to always use the "leading brand" but having had several of these now, they work better, have a better design of controls and power connection, and is more reliable using Qi charging. Also, you can remove the phone from this case much more easily, and the case is slightly thinner. And it costs a bit less too. I've been using power cases since they came out years ago and have found this to be the best brand in all respects.See full review