Quality control can be a major issue with products from some Chinese factories, so you need to be very clear on what kind of warranty you're getting. Generally you'll also need to accept that these machines are not as well finished as the big name brand machines. The major kicker, however, is parts availability. With any kind of a machine which is subject to rugged conditions of use that is why you want an ATV after all things will break. No matter how hot the name, how good the quality control, how high the price, when you bounce off rocks and slam the ground, launch a quad airborne, run through mud and sand and generally have a really good time, you are going to get breakage and plain old mechanical wear, tear, fatigue and eventual parts failure. Getting parts to fix up your Chinese ATV could be a nightmare.