I have the alloy one-speed. I must say it's very well constructed and parts swap out with HPI great. I am eye-balling the two-speed mainly for the low-end response, but don't think I'd ever have room for the top end. But it looks solid to me, maybe someone else will report once they have bashed one a bit.
One down-fall with KM electronics is you either get good units or bad ones, my steering servo went kaput right away bu danlc4 made good on it and sent me a much nicer metal one to replace it! Only other thing I've broken is the wing from rolling it and a wheel... I snapped it clean off the hub, but I don't blame the car for that, it was 0 degrees out and I was rallying pretty hard

I say hurry up and buy it so you start upgrading sooner :w00t: