Bought a Makita DTW1002 impact wrench (1000Nm continuous, 1600Nm nut breaking) as my corded Clarke one (450Nm) struggled a bit on some things. I already have 18V Makita kit so could just buy the bare tool.
I should have bought one years ago! Being cordless it's not a faff to get it out and have it where I need it - I didn't use the mains one much as I had to run an extension cable to use it. Rotating the wheels on the camper, jack it up, rattle gun them off, rattle gun back up with a medium torque set, final torque with a torque wrench. Very fast and easy, even tough stuff is no wrist strain.
Taking the wheels off my motorbike to get new tyres, get the bike on the stands and whip off the bolts. No straining on a breaker bar with the bike still on the ground, bike didn't move at all even on stands.
Eldest son used it to disassemble the suspension on his Disco to replace lower arms, again just worked on stuff that his air impact wrench wouldn't touch.
I am genuinely impressed. Not cheap, but makes jobs so easy - and nuts you think are never going to move just spin off.