I have a lovely Win98 machine that works
absolutely perfectly but after I got the Win10 machine I could no longer fit the Win98 on my table and so now it's sadly "sleeping" in a spare bedroom

But I do currently have WinXP, Win7 and Win10 on the go - and enjoy using them
all 
However, if I'm ever forced to buy yet
another Windows machine (possibly Win11 or Win12 - or whatever else Microsoft might try to force on us) it is likely to be as basic and cheap a Laptop as I can suitably find
