He had a good drill - just not one powerful enough for a whole saw which takes a lot more power. I have a drill that powerful, and I reach for my much less powerful drill anyway most of the time because when you don't need the power the lighter drill is better.
That's the thing I've learned about drills...you unfortunately need 2. One is the probably battery powered for doing random light drilling conveniently for relatively short periods of time around the house. Two is a probably corded, high power drill for everything else.
Agreed. My 24V DeWalt cordless drill is the best tool I've ever bought, but tough masonry requires the pro-grade Bosch corded, although its price annoyed me when its chuck turned out to be crap.
A friend, who worked at the place I bought that Bosch drill, chose to spend £14.99 on the cheapest corded drill he could find, then was surprised to find it didn't have enough power to actually drill a hole. It's the one type of tool I'd treat as an exception to the idea of buying cheap first, especially if you're young and moving into your first home - a good one will do its job well and last decades.
Hey...I have about the same. I've got a 20v DeWalt brushless compact for day to day (light and good battery life) and a pro grade Makita corded that does everything up to drilling masonry and such.
And in addition to that, there is a good chance for you to need a rotary hammer at some point. A regular drill in percussion mode can drill in stone or concrete in theory, but it will be 10 times the effort, if you can make it at all.
Rotary hammers are not interchangeable with regular "high power" drills because the bits are mounted differently, though you can make do with a chuck adapter.
If you're regularly drilling metal, you might want an air drill, too. Which gives you an excuse to buy a quality air compressor, which justifies even more pneumatic tools...