Pretty sure most high end brands are made in Taiwan or China... I know Tekno is designed in the US, but they have "made in Taiwan" labels marked on their boxes... HB used to be made by Soar, also based out of Taiwan, nor sure if Soar still makes their kits since they where chopped up from HPI and sold off after HPI went belly up. Not sure exactly where TLR kits are made but I seriously doubt they are 100% made in the US.
IMO, the the top 2 brands I see rising to the top locally are Tekno and XRay, both are extremely durable and offer comparable team driver support and both are extremely competitive at the club level. I've seen more local pros jump over to Tekno more than any other brand and that's been the brand that I've grown to trust the most.