Snap versus Deb files

[DenW]

I agree with not rushing into either Snap or Flatpak as standard at this point in time.  Of course Ubuntu is going with Snap and Linux Mint 18.3 will be supporting Flatpak so it is good to see what their experience will be.  I will say that I use Etcher as my ISO writer of choice and have installed its AppImage on all four of my Linux distros without experiencing any problem during install or use - highly recommended program.
I have not yet used any other AppImage - does any one else have experience with AppImage programs?