For me it's PeppermintOS.
I started my Linux adventure a few years ago, and haven't owned a Windows PC since.
I currently use Arch on my main rig, and I wanted to install Linux on two old laptops that I found laying around in my house
I then remembered the first distro I ever used, which is PeppermintOS, and I was amazed at the latest updates they released.
They even have a mini ISO now to do a net-install with no bloat, with a Debian or Devuan base.
Sadly, I believe the founder passed away a few years ago, which is why I was really happy to see the continuation of this amazing project.
How can someone speak such truth. Agree it is not perfect. But it just works and really well. Only big controversy I can think of is the website being hacked a couple of years ago, but they were open and transparent in my opinion about the hole thing. Also disto hoped a lot but I am always brought back to "green Ubuntu". Can Mint team get ontop of Wayland please