As an Android user from the last drop, I enjoyed using it while I was in the beta. Outside of it though, and not only is the iOS version ahead, we're still contending with bizarre bugs that they can't quite seem to squash. I hate being told that "the app didn't start" or "was killed" when I have it open, while driving, only to have it not recognize the event while on WiFi. It also occasionally uses a different track than was actually taken, so take that as you will.
andyThis is on a stock Nexus 5, 4.4.4. Since the late April update, it has never recorded an event when connected to a WiFi network of any kind. I also use My Tracks to maintain a record of the trips I take, since Automatic does not expose any of that info to me in more than a glance-able format, so I know when it's just throwing a crap track at me. Can't say I'm exactly happy with my current experience.