Way late answering this one, but yes I use UE as well. It has its ups and downs, more lately than normal, but the OS has generally been very good. I am using UE 3.2 right now and I like it a lot. Uses little resources, is fast and doesn't have the wireless hangs and other issues in Ubuntu 11.10 that also carried into Mint 12. Even though 3.2 is based on Ubuntu 11.10 like Mint 12, the devs fixed some issues before releasing it to enhance the user experience.
I'm still up in the air. I really like Cinnamon as well and Mint just keeps improving. Once resources get under control in Cinnamon it will probably become my DE of choice because of how little screen space it uses, how simplified it is and it just looks great.