I will admit right off that I probably only have used half of what this unit can do. The touch screen has large icons and is easy to view on the fly and easy to navigate. I did not use the hrm, and have not pre planned rides. but have looked over a few mtn bike roads while i was out riding to figure out which route I wanted to take. It easily and conveniently has stored all my rides including time, elevation gain, distance etc. Easy to charge and lasts quite a while, considerably longer than my Pioneer head unit. If you are traveling to an area you aren't familiar with I can see the mapping feature to be very handy. If your riding your home trails maybe not that valuable, kind of like navi in your car. The unit has been reliable over several months of decent abuse ( a few minor tumbles). Size is not overwhelming about as large as you would want to see easily but not feel like a laptop on your bars. From what I have used on this computer I would recommend it for someone looking for this type of unit, more mapping oriented, but great for all your ride info as well, just wish it showed power.