I recently saw a Skymaster Viperjet kit, in all honesty, my FEJ Liberty build looks better. Are they perfect? No, but are any of the Chinese arf's? No. They are priced far less than anything else, and they are improving. I think they are worth buying personally but expect to do a little more work than a pure ARF might be. Check things over and be smart about it. They are leaps and bounds better than they were a year ago.