I've been looking at GPS units for a while now and initially wasn't going to go the whole Zumo hog due to the cost. I priced up other units and waterproof mounting options etc but then a Zumo came up for sale on Kiwi Biker at a good price - about the same as the other options + mounts that I'd been looking at. I couldn't pass it up and so here it is.
At the moment I'm using the handle bar mount which came with the unit and which is supposed to be on the left hand side but as my heated grips controller is there then they had to go on the right hand side. It's not in too bad a position and is not quite as "in your face" as it looks in the pictures - when riding you have to look down to see the screen. I still think that I'll end up with a different mount more centrally located to get it more out of the way.
I'm really looking forward to putting it to the test on a decent ride (next year's Southern Cross for one) and it should be great for rides like the Grand Challenge.