Vintage work crew photos

[Toolmaker51]

Those I know using cordless like Milwaukee more than other brands. In my frame of mind, that name in red [reputation] means more to the company than any of the other brands, including yellow one.
I happen to use Porter-Cable; satisfied thus far. Biggest test was 4, 17/32" holes in 5/8" HRS weld table [mount a vise]. I center drilled, pilot drilled, then to size. Used 2 and part of a third 2ah batteries from ~80% charge. Has unique thermal shutdown feature; got too hot to hold! Other work hasn't been so heavy.

Far as how batteries have changed is a little different than the printer ink scheme. Battery performance [volts & ah] has steadily increased.
I'm positive ink doesn't give a rat's ass about container shape. And when's last time you saw cartridge size increase?