Hi brianogilvie, thanks, this is a comprehensive look at the 800. Have you looked at the eTrex Legend HCx/Vista HCx, the 20 and the 30? if you are looking just for the mapping features on a bike? Looks like the ACA forum guys use these over the expensive 800? I am trying to find out the difference. Is it just that the 800 includes a map and in the other products you have to enter the waypoints or is there some other distinct advantage with buying the 800? sorry for the deviation, OP...