@immychan I migrated both of my parents recently and yep, launching Firefox works the same on both operating systems...
I found openSUSE to be very reliable, especially across upgrades, and the automatic btrfs-snapshotting is very reassuring.
KDE looks/works quite like Windows out of the box, is tested by lots of people in all kinds of situations, and with its many options, I was confident that I could cover any requests my parents might have.
I was also a fan of it actually looking like an upgrade.
And I use openSUSE+KDE myself, so I just know a lot about it...
I'm not even particularly worried about stability with Tumbleweed. My main issue is rather that you have to run a dist-upgrade every time you want to update, which can only be done from the command-line.
I could probably do it with a script, but I'll have to test that first on my system.
Linux Geeks doing what Linux Geeks do..