I've been following the Edge 130 forum for a while as I quite like the 'small and simple' form factor. Currently using an Edge 25 which I really like.
Browsing around Amazon.co.uk I see that the Edge 130 is £145 and the Edge 520 is £150.
Is the 520 a significantly better piece of kit?
My concerns about the Edge 130 are battery duration and cold weather performance (as reported recently in this forum).
If you were in the market for a £150ish bike computer, which would you buy?