just some other follow up...
No prompts with tracks. But your comment about having to watch the screen... true but still way easier than staring at a map or queue sheet on your handlebar bag and wondering if that next road is the turn you're looking for and, oops, no street sign, so now what do I do?, etc.. And I find bike paths is where gps really shines over paper maps. Urban bike paths are notorious for branching unpredictably.
And regarding battery power... you might be thinking of smartphones and their terrible problems with gps navigation sucking power. I find the etrex 20 to last a LONG time. Sometimes I forget to turn it off at day's end. The next morning it's still running and has plenty of battery life left. One spare set should last you a week of riding all day long.
Nice to read that the etrex-20 is great with battery run times. When I do a 20 mile ride with my android ( running cue sheet ) it will usually take about *25-40% of the battery depending on how much I have to run the screen. ( * using other apps it can use much more ) That's not too bad. If I was doing a longer ride I might worry though. Since I also own a Garmin I have the option for longer run times. Next year I'll likely just buy an extra battery for the Android and have all my bases covered.
About the "premium service" from RWGPS; Yes, nice to be able to download directly to the unit. With the 705 since I'm not using the P-Service it is not so easy to download the route. The problem seems that once I've down loaded the route I have a hard time finding just where it is on my computer so I can send it to my 705.
I eventually find it but damn, I wish the process was more intuitive. I guess the next time I use the Garmin I'll have to write the procedure down so I don't forget. Sorry but I'm not going to pay $10 a month just so something is easier to download. That is a complete rip-off. With the smartphones you don't have this problem. You just press "download route" on the phone and it is done.