IMO "Horses for Courses". I fly pattern with a Hacker. My choice was influenced largely by the weight. For shockies I prefer the AXI as it has mounts already welded. The Hacker equivalent which is more powerful is heavier especially by the time you have added the mount. It is also not ideal for back mounting when you want to use a prop saver. In my other planes I use Hackers mainly because they are a great price and come with all the accessories. I feel that having to buy them separately for AXI is a rip off. I also have several torque motors which are at least as good as the ones mentioned. Just my opinion.