The d3 is ok if you are prepared to buy a chassis that is widely advertised as the newest best thing since sliced bread but neglects to tell you the standard kit hadn't sufficient bits to make it properly drivable, like the serious amount of slip and slap the centre belt does as no tensioner is supplied, and the main drive spur wobbles like a jelly with a decent powerful motor, and that you need to basically redo the entire chassis's main components with alloy replacements before it comes anywhere near being drivable to a decent standard