I just watched some reviews of eTrex 35 devices on youtube, eTrex 35 are versatile devices targeted for many outdoor activities, including biking. Sadly, the software looks like a polished version of one that is available for Edge Explore and its bike functions look to be much better than Edge, a device dedicated to bikes. For instance, the elevation screen that looks more functional than one on Edge or map view combined with data fields. Plus, a UI overall that looks much better, e.g the pull up overlay menu.
See here for details: www.tramsoft.ch/.../garmin_etrex_touch_en.html