Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good heavy duty drill

I'm very satisfied with this drill. I bought it for use with self-feed bits for drilling through joists, etc, and it has worked out very well. It feels like it will last the rest of my life, if not longer. It wasn't immediately obvious to me from the description that the High/Low gearing is not selectable with a switch -- instead it involves removing the right-angle mechanism, removing the chuck, putting the chuck on the other side of the right-angle mechanism, and re-attaching. Not a quick operation. But for my purposes, I leave it on Low all the time anyway. As far as speed control, it is true variable-speed (trigger controlled), just as you'd expect, but I wasn't 100% sure on that from the description either.