I just got a 705 about a month ago. I'm still learning to use it (have a lot of experience with my Forerunner 301), but what I love about the 705 most so far is being able to upload routes from Mapmyride.com. Then I tell it to navigate the route, and it beeps every time there's a turn upcoming, shows me a direction arrow and also the name of the road I'm supposed to turn on.

For a totally unfamiliar area, and especially for route planning without a computer, yeah, I'd want paper maps. But just for getting around - navigating bikeable streets in town while staying off the main roads; making sure I'm on track, and getting back on track if I get off - I LOVE my 705.