Basically, it's like the generic food vs the brand name, sometimes the generic (clone) is just as good as the name brand (original) sometimes it isn't. Trial and error to find out who sells good clones and, the clone is probably not going to have the warranty or customer service of the original.
That said, the batteries and electronic inside these things are almost all made in China, clone or original so, it is possible to get a good quality clone that uses the same innards as the name brand. Just like semi trucks, you can get a Detroit 500 HP motor on an Eaton Road Ranger 13 speed transmission and, it can be a Freightliner, Peterbilt, Kenworth, Western Star, Mac, Volvo or Marmon brand truck. Same thing other than the glider kit (outside cosmetic parts that do very little for how it runs.)