You don't think..... well if you dind't tested..... the guys at 35rctanks aren't my friends at all, in fact I bought the parts through a friend of mine, but the system is easy to install, super smooth and have a great sound and reliable electronic. It cost no much comparing with Tamiya or others and is provided full assembled, so you only have to place in the Tamiya plastic. I'm not a newcomer so I think I can give an valuable opinion. Maybe the guys are competitors of you.