Your right, they don't.
When I look around at Walmart & Target I mostly see newbright. Last time I was at Radio Shack it looked like they had a few decent ones, but looks like there moving to newbright to. I have'nt been to toys-r-us in many years, so dont know what they have. Some times at christmas I see "pro" series stuff that looks all right. One looked like a clone of a traxxas wrestler. I picked up a maisto crawler few years back, was'nt bad. Hotwheels/tyco had some good stuff, but dont know if they are still making stuff.