Wall charger changing faster then any other charging system

Yes. Wireless charging is marginally quicker than usb charging, but both are way slower than using a wall charger. I use all three methods, from 5% to full the nexus 5 takes about 90 minutes using the wall charger whereas the wireless pad or usb takes about 360 minutes. It's partly to do with the amperage, and partly to do with software, as when you connect to the pc android devices detect the usb control commands and therefore limit the power input. This can be overruled with some kernel modules though.

I don't think there is any way of "How to choose good charger" Well, i think you need to move down to the samsung store and ask them for original wall charger for samsung galaxy S4 !! If you are still confused how to ask then i'll purchase one for you and send it to your address you just need to pay me some $$