Garmin Montana 710 versus Zumo XT2
 

My old GPS has finally given up the ghost. Anybody with experience of the Garmin Montana 710 and/or Zumo XT2 who can share their thoughts? Or are these horrifically expensive and everyone is using smartphone navigation these days?
Cheers.

I've never used a zumo so here I cannot say.

As for the 710, I can offer this so far.

Hi, I had a 660 and replaced it last year, power contacts too eroded. Replaced with a XT2 and I'm blown away by the difference. There's nothing i don't like about the XT2, it's awesome. the security holder that's available is a bit pony though, I managed to bend, twist and hammer the 660 metal security holder into submission which seems to work.