RE: Really a differnce?
I started with a CEN Matrix C2. The LHS dropped it and I couldn't get parts. I also couldn't get any advice at the track. I spent alot of time searching for parts from other manufacturers that might fit. The SH .28 was a nightmare until I found a backplate from another manufacturer and was able to go to box start. It is still really hard to start and has much less snap and horsepower than a good .21 Also, the CEN buggy doesn't hold a line like a racing buggy can and it doesn't jump well because it's too heavy.
If I had to do it again I would have gotten a D8. I would have bought good servos and maybe an FM radio to save money and a "beginner" motor to learn to tune. In general D8 parts are cheaper than CEN parts too.