I got myself to my Galaxy S5 LTE + this original charger because it fits nicely together on the size and color of her - and you drive indeed most generally with original parts.
However, there was little teething problems:
Connected via USB to the PC, the pad switched off again and gave an error message. What looked like a failure at first but turned out to be a logical consequence - the Samsung PSU, which is enclosed and the S5, 2.0A max has. - That does not have a USB port.
Since I run it on the power cord, it works great and loads really quickly. The difference from the cable store is m. E. to neglect. For me, it also loads without problems 100% full
Good invested 30 would bring it to me again.