The most powerful oil pulse driver I've used is the Makita 18 volt. It's way better than the Milwaukee M18 Surge. However, the M12 Surge is what I have in my work bag pretty much all day every day. It is so much less deafening than a regular impact, and it's light enough to carry it all the time. I love it so much that I bought a second one in case the first stops working or gets lost. If I lost both of mine tomorrow, I'd order another one immediately. Best tool ever.