I have been using the red and yellow brand for over ten years. When I started using this angle grinder, I immediately noticed fatigue in my wrist and hand. What I found is that the power button is in two widely spaced positions, which puts a very heavy load in front of you. These two things make using this grinder inconvenient. Ignoring those two plugs for show, the addition of a half-inch wheel is nice compared to most 4.5-inch wheels. A tool-less disc guard is essential, but most grinders have one anyway. The grinder has enough power to spin a 5 inch metal grinding wheel which I tried it on. I pushed with all my might and even cut off a piece of the 1/4" plate with the included grinding wheel and all was good. The construction is solid, overall it looks like a well built tool and isn't going to fall apart anytime soon.