Hi Asprin624, Thanks for getting back to me with those links.
I was told that they have discontinued the ZUMO 550; one of the motorcycle mounts I use had leaked a while ago, and I could not find a replacement mount here in Aus, none of the dealers listed on the link from the site you sent through were interested in helping me.
I have used a ZUMO for many years, have mounts on two motorcycles as well as a couple of car mounts; it have navigated me through Australia, New Zealand, the UK, and North America. That's why I would prefer to stick with the ZUMO for as long as I can.