i have the Magellan trx7. I bought it early before Yamaha started using them. It is an android so little clunky compared to a mac, but updates in software have improved it quite a bit. If get one, be sure to get the TRX7 as some of the other models look same but are not dust and water proof. Like any tablet, you need a good mount or it will vibrate around. I have had it mounted above my head on roll bar, but when I moved the gauge to in front of me, I used that spot to mount GPS. In that location passenger can do more where above head, it is just you. I did not have a lot of luck with the ram mounts handling the weight. It starts up with key on if plug in lighter hole, but it has to be manually shut down at end of day. It will put screen to sleep after few minutes but battery still goes down over time. You do not loose data if battery goes dead, but have to charge enough to stay on to upload data to it. With practice you can record your path and save it. It has back track feature to get you back home (just remember it records all the wrong trails you took and you will have to pay attention when you come to a corner that you went several ways from or you make all the same mistakes on way home too LOL)
Maps are Ok and if you take time to down load additional stuff for arae before leaving home, it is even better. I have not tried the stat view because you almost need your route laided out so you can down load the data at home. Would be good idea for ride park with specific boundies, but not real practical if doing 100 mile day.
I have tried using some of the tablet units, but to me once learn it, it is more durable. Just my 2 cents worth