I have been using the Garmin Oregon on my bikes for the past 2 years.
It is absolutely fantastic.
I travel alot on my road bike and thats where it comes in handy.
There is a bicycle mount available for it, around $15.
Creating routes, saving tracks, waypoint manager and uploading any .gpx file are just a few
of the features I find very useful. As well as having a map loaded so you know where you are.
Just recently I travelled along the Rail Trail from Cambridge to Hamilton and somehow got of course heading towards Brantford. I just selected my diner I was going to in brantford (3.14km away) which I had marked as a waypoint and on I went.
It doesn’t have the training features of the 705, but I wasn’t looking for that, I wanted the large touch screen.
Hope this helps a bit in your decision.