Get the battery powered hand-held impact gun. I bought a Milwaukee. Get the speedymoto axle nut socket.
At Roebling Road in March for the WERA Nationals, I was dreading changing my tires. I had the huge torque wrench, the breaker bar, etc. I ate my Wheaties and got ready. James, the Pirelli guy, said just bring the bike to me. I said OK. He used a hand held impact gun, made by Snap-On, while I sat on the bike and the sprocket nut came right off. No fuss no muss. I was stupefied!
Needless to say, when I got home, I got on the internet and ordered the Milwaukee. I really researched the different impact guns. I love my 1299S but I will admit it takes a gorilla to get that rear axle nut off. I can't say it enough...get a hand held impact gun (that uses a battery pack that clips in to the bottom).
Peace. Highside49