My brother is getting the I5 for christmas so I got to play with it the other day when it came in. My impression is it is for car use only, and dumbed down to make it easy for anyone to use. With only 3 buttons ( I think) it would probaly take more time to scroll through stuff than the others that have 5 buttons or so. But it comes preloaded with everything so you do not need to buy or download other maps. Its not waterproof either. and its funky, blocky shape would not fit on a bike well. Do you want portability to take hiking? Do you want ability to run off regular batteries and not built-in Li Ion's? Color or black and white screen? Excelent Garmins for cars are often big on a bike, not portable, expensive memory cards, etc so you need to decide what your main use will be. If you portability and bike use, the 60c, 60cs, 76c or 76cs are probaly your best bet.