I brought the ambit a few weeks ago, and so far I am very happy with it, the Movelink that you view and plan your data on the PC is very good, and is easy to plan routes with, I have not tested the watch in the field that much, but for exercise, (jogging, trail running) it is fantastic, it pairs well with the HR monitor(if you decide to purchase as an extra), and your activities are saved and easy to view and compare with previous workouts/tracks, I will let you know about battery life when I field test the unit "proper"
The GPS location function works really fast and very easy to use,
There are a lot of APPS that can be downloaded and set up to be used, like a lap swimming counting app,
when installed, on your first lap, press a button, and the ambit will start to count your laps,
I also have a Garmin 62sc, and as other OP's have pointed out, the Garmin interface is "soul destroying "

and difficult to navigate around, and not simple to use. One thing that drive me crazy is as soon as you turn it on, it is tracking, so if you need to start a new track at a fresh position, you need to "clear current track" why you cannot just press "start new track" and a simple "finish new track" and save function, is beyond me, (other users, if I am missing something please feel free to correct me)
Basecamp works well and helps make a bit of sense using the 62sc it and is easy to plan tracks and routes,
cheers,
Gary