I will be picking up a Vertex or the Yikong YK4061 in the next few weeks. There is so much positive about the Vertex right now, but nobody paying much attention to the Yikong just because its a Chinese company. As far as Yikong, they make several of the Redcat cars, and some of FMS' best cars, as well as other brands. Don't dismiss Yikong just because they are from China, as China makes some of the worlds best tech. The YK4061/Vertex WAS co designed by Redcat, not just a rebrand or copy, it is Redcats rig. The only difference between the two is the body as far as I have heard/read. Yikong agreed to not distribute in the US, but available to us via Ali or Bangood. Really boils down to which body you like best. All of the upgrades available for the Vertex will no doubt fit the YK4061. I just need to decide which body I like better soon, as I want this by Thanksgiving weekend, and getting the Yikong will take a while to get here.
There are only a few Chinese companies making top RC's, and this includes most all our favorite brands rigs. When it is said that a certain brand just copied the Chinese brand, keep in mind that that company was hired by them to make it to their specs....not just a copy.