This is what I researched so far Garmin 680T pros - Work like regular gps - TOPO map preinstalled. - Nearest gas station funtion etc. cons - touch screen is bit off - slow loading. Trail tech voyage pro pros - buddy tracker (if your buddy has this one too) - work with all the bike information hook up which could be pretty useful - brighter screen than garmine - faster and better touch Cons - won't work like gps. can set up way point but can't searched by address nor find nearest gas station. I was almost leaning to voyager pro but one that not working as navigation is bit bummer. any real opinion?