I can tell you ahead of time, I'm a Garmin fanboy, so read the following with full disclosure of that-

I LOVE the 705. Routing, POI's, color screen, 18 hour battery life, farily fast full charge (3 hours), waterproof, durable. I can't say enough good things about it. I now run with it as well, although there is no setting in the gps for "running" I convert it in the software and it adjusts well enough to show me my performance.

Went on a group ride with a "paper map" guy who was making fun, saying he only uses paper, I told him we were passing the road he was looking for (watching it come up on the nice color screen on the GPS) he insisted it was further ahead, and even joked that this was proof the GPS wasn't fool proof. 5 min later we were turning around, and I was giving him some good natured ribbing about "paper maps"

Unelss you're going to be riding for more than 15 hours or so without getting near a power outlet, I'd trust the 705 with the maps over anything. That's just me, but I love mine.

Joe