For Electric I have a Ryobi 1/2" and it is really stout, easily the strongest thing Ryobi makes because most of thier stuff isn't super stout.

For Pneumatic I had to go by a better one when I was tearing down the Dana to go in my car. I bought the Harbor Freight "Earthquake". It is a beast and handled the pinion nut on that old Dana no problem where my old no name didn't have a chance. Since I don't use pneumatic much I went with the harbor freight, it did have great reviews and I would give it a great review as well. Excellent Value.