I have never owned any PowerPC based Mac, so I cannot tell how good the keyboard was on powerbook line.
My first ever Mac was early 2008 white plastic MacBook, while these key feel quite hard to type on. However, I have used this Apple desktop keyboard before
View attachment 2030733
which I loved. I don't quite like the current Magic Keyboard line up, feel quite hard to type on.
This white USB-keyboard model is the only one to maintain & clean properly. Well, it does need thorough spring cleaning
I have never owned any PowerPC based Mac, so I cannot tell how good the keyboard was on powerbook line.
My first ever Mac was early 2008 white plastic MacBook, while these key feel quite hard to type on. However, I have used this Apple desktop keyboard before
View attachment 2030733
which I loved. I don't quite like the current Magic Keyboard line up, feel quite hard to type on.
Those white keyboard with translucent body that came with the white&acrylic G5 and intel-iMacs are my least favorite keyboards and are indeed uncomfortable to type on, though there were the best to maintain, since they can be disassembled, fully cleaned and reassembled without damage.
The coloured acrylic keyboards, which came with the early iMac G3 are my favorites, but unfortunately they lack of some mission-critical keys.
The black&translucent acrylic keyboards, that came with the late iMac G3 and the Cube G4 etc. are my second favorite ones. (The model with white keys coming with the Goosneck /iMac G4 tend to get an ugly yellow tint and look aweful.)
Both these colored and black/acrylic keyboards are hard to open for cleaning, because plastic connctions are impossible to loose and tend to break on any attempt. The only option is to open those keyboards is from the backside (where the USB-cable comes out), bend them open at the backside cautiosly (about 1-2 inch) like a clamshell and remove the innerts for cleaning, but leave the plastic-connections at the frontside untouched. Quite cumbersome but possible.
At work I like the small white/aluminum USB-keyboards most (the ones without number-block), since for hygenic-reasons they can be covered with the same type of TPU-cover, that where offered for the pre-retina Unibody-Macbooks.
Too bad - starting with the aluminum-keyboards any maintainance is nearly impossible.
So on the long run that kind of white-translucent keyboard of the white&acryl G4/intel iMacs might be the one to survive all the others ... Unless they where dumped because of "minor reasons" like uncomfortable typing or looking filthy because of visible lint and dirt trapped in the translucent case.
Mind, that after getting some TLC they always start to look like new (and typing feels as bad as before).