Ubuntu MATE 15.1024 Mar 2016
I picked up one of my older laptops and realized I had this installed.
Ubuntu MATE 15.10
When I first installed it I immediately like it. The only problem that kept me from making it a daily driver was the bluetooth issue. I paired my bluetooth speaker and it sounded terrible. Rather than fight with it I ended up relegating it to an OS that I played with from time to time.