Although it's still in an alpha phase Pop!_OS's Cosmic desktop is very near time to release to beta. It seems to be stable enough to use for an average computer user. I wouldnt suggest it for a power user. I take you on a tour of what they have got finished and what they have left to do.
Its close enough that I am going to challenge myself to use it for a week during the day job. Check back on Sunday 5/03 for the results of my Cosmic challenge.
Full instructions to install it can be found:
https://github.com/popos/cosmicepoch