While still mainly a Windows user, I've tinkered around with various OS'es over the years.
I also tinker with old hardware a lot, and will often slap a Linux distro on an old, rebuilt PC or old, fixed up laptop.
My first go at Zorin was a while back, I liked it but at that time it wasn't something that I would be using daily (some things were still missing for me, a few other things were still a bit too reliant on opening up a console and messing about with commands to do things that should've been set up already, stuff like that).
Still, I liked it enough that Zorin remained on my list of OS'es to install on old hardware.
I've also occasionally installed it next to Windows on my regular, more modern PC - and if you think Zorin works fast on older hardware, oh boy, on a beefier current-day machine built for gaming/heavy graphics, it'll drag the roadrunner into a dark alley, mug that long-legged chicken and be out of there before the roadrunner even realizes it just got mugged.
Currently I installed the core edition next to Windows on an old laptop (12-ish years old) that a friend brought in for repairs, and despite the laptop only having very underwhelming onboard graphics, a CPU that might've been among the first of AMD's 64-bit CPU's, and only having 4GB RAM... Zorin still runs quite smooth on it.
My only gripes so far are that the menu button (think of Windows' "start" button) sometimes seems to just vanish (I suspect it simply goes too far to the left for some reason, way outside the screen's range) and that I've yet to find a way to port a self-made desktop theme which I created on another Linux OS years ago.
Oh, and the keyboard layout... I've found one that's "close enough" to what this laptop has, leaving just a few minor inconveniences regarding 3-5 missing keys that aren't even used regularly... but I'm putting that particular issue down to the laptop having some obscure proprietary layout (at least, I vaguely recall the manufacturer often trying to make everything about their products "unique" (translation: "Good luck trying to plug any standard cables made by anyone else into any of our laptops").
So, long story short, after having seen Zorin Core 15.3 do just fine on this antiquated laptop, it looks like I'll be making Zorin into a permanent resident on my regular desktop PC (dual-boot), maybe even upgrading to ultimate when the bills that will be draining my bank account for the next few months (due to a hospital stay and spending close to 2 months in a recovery "hotel" after surgery) no longer wipe my bank account out.