I have 4 Zero X, 2 MX and 1 S and I have run all of them in some pretty gnarly terrain and have had no issues. My S has over 1,500 miles and still no service needed. Haven t even adjusted the chain. All the Zero X bikes have been killer as well. I rode the Quantya, Brammo and Electric Motorsports GPR-S and yes, they all have their own pros and cons but overall, the Zero has my vote. (obviously)
One thing to consider with Zero vs. Quantya is the battery pack, Warranty and Customer Service. The Zero battery is modular and comes out relatively quick to replace with a fully charged one and you keep on riding. You can also do a quick charge in 45 mins of the Zero battery pack. The Quantya does not have a modular battery and once the charge is done so is the whole bike. Being able to swap batteries quickly will be a big difference in competition. However, I did see that Quantya had a modular battery at a race somewhere, not sure if that was a test or something they are going to change about their bike.
As far as I am concerned, they are all good bikes with great people behind them, the fact that you are going to buy electric is good enough. The more people we get buying electric the more it solidifies our future in this market.
Oh, and for those in the So Cal area, I got my Zero S on the Carson Daly Show yesterday with my IR Hollywood Electrics. Airs tonight after Jimmy Kimmel show on NBC.
MR-US-0102
So Cal, AZ, NV
Here are a few pics with the Zero X for your laughter