First off, let me say this grinder packs a serious punch! I've used it for cutting metal pipes and grinding down concrete edges, and it handles both like a champ. The brushless motor delivers smooth power without bogging down, even under heavy load.

The variable speed control is a game-changer - I keep it around 6,000 RPM for delicate polishing work on wood projects, then crank it up to full 11,000 RPM when I need to power through steel rebar. The spindle lock makes wheel changes quick and frustration-free.

Now for the downsides: that noise complaint in the reviews? Totally valid. It's noticeably louder than my corded grinders. I always wear ear protection when using it. Also, while the battery compatibility is great (all my Dewalt 20V batteries work perfectly), the runtime could be better - about 15 minutes of heavy grinding per 5Ah battery.

The adjustable handle really does make a difference during long jobs. I'm left-handed and being able to reposition the grip saved my wrist during a weekend deck-building project where I used it constantly for trimming composite boards.

Would I recommend it? Absolutely - if you're already in the Dewalt battery ecosystem. The performance rivals OEM tools at half the price. Just keep some spare batteries charged and your earplugs handy!