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I did have an FX-4000p after the HP. That had a really nice dot-matrix display and was programmable. Another device I wish I'd kept. Picture from Internet.

I had an HP-11C for many years - would still if I regularly needed to do calculations away from a computer.

If you're on the move and need an RPN calculator fix, I recommend the RealCalc app (Android) from Quadric Software. It is the only decent calculator app I have found and has RPN support, as well as hex/ binary/ octal/ scientific ...

I’ve a small collection of HP calculators. 3 of the 48 family and a modern 35.

RPN at first does make you go huh, what, why is this even a thing? :p I've got a en.wikipedia.org/wiki/TI-85 in a drawer/box somewhere - was a fantastic little gadget.

I did the early work to build a Z80 emulation of the original Nut 56-bit serial processor. It should be possible to run the original HP ROMs on MicroBeast. Sadly, I've not had the spare time to complete that project. I suspect it would have a bit of a niche audience!

I still have an HP-41CX, but I use the one on my phone now. I had a 15C back in 80s. Lovely machine!

Yeah, faster, modern tech, mad battery life, bug fixes, USB, etc. They look pretty sweet honestly.

Always wanted one of the HP calculators but could never justify one. Went for those cheaper TI jobs instead.

Indeed. I was fortunate to be gifted mine by a friend of my father who had upgraded to a newer model. Otherwise I’d have been stuck with a lesser model.

It has to be done ...

It made me search, and I found a line of products called boob polish. There even seems to exist a competitor using the same term, so perhaps it becomes generic.

I have an HP-35s, but I'd rather like a Swiss Micros DM16L if they were somewhat cheaper :)