Correct me if I'm wrong, but I believe Schumacher's main market is GB and in a way western Europe - at least not worldwide like some other brands.
As the SCs have become so popular in such a short time, it's hard to judge for a brand whether it's going to be around for another few years - aka, whether it's worth developing it. As a smaller brand you can't risk investing in the development of a car that won't be popular anymore by the time it's ready to put on the shelves of the hobby stores
That said, I haven't driven my (Kyosho Ultima) SC on a track yet, but it's a lot of fun bashing with it! It's back end is really loose (though with a less agressive driving style it goes pretty well), yet in a predictable and balanced way - it's easily the best car+kit setup for drifting I've driven so far
It could be down to the mild brushless system though that I don't spin out, and the hard compound tires do help to keep the back end spinning!
