I have got (with my IntelliStation) also the Apple PowerBook (15" with
the "high resolution" display, 1.67MHz, 2x 128GB SSD, OS 10.5). Not a
bad computer, with the TenFourFox and with some patience it can be used
to surf the World Wide Web or oven to do useful things. I have
installed a TeX and other tools (the EverNote, the Vienna RSS reader)
and even the Palm Desktop. But, of course, I fear to use it outdoors.
So I use it only sometimes instead f my desktops.
My real "laptop" was the GPD Pocket (a 7" laptop with an Atom CPU). I
used it a lot and I was satisfied with it until its battery died. I'm
still unable to get the replacement (no one is wiling to ship the
battery even to Germany). So I use the Gemini PDA (a PSION5-sized
computer, not a real laptop) instead of it. Not an ideal replacement
but it works.
The rest of my collection was used in 2018 just for testing.