I've toured once for about 2 weeks in Mexico on a rental bike, and have also toured through the western US, Canada, New Zealand, India, and Australia.
I've enjoyed riding in all these places but of all my trips, my road trip in _Australia_ was by far my favorite.
I rented a BMW F650 in Sydney, and took four weeks to do a 6000 mile loop around the eastern half of Aus. I was able to see the major tourist sites in Aus - Ayers Rock, the Great Ocean Road, Sydney's harbour and Opera House, the Outback, etc. It was a great
The cost in US dollars was pretty reasonable: $2000 US for the F650 (and hard saddlebags) rental, about $300 for fuel, the same again for food, drink, film, and other miscellaneous items. I packed a tent and sleeping bag; Australia has very good "caravan parks" (equivalent to KOAs) in every little town and near all parks, etc. You can get a tent site at a KOA-type place for only $10 a night. The caravan parks will almost always have little standalone
'caravans' (like a small trailer you might pull with a truck) for say $25 a
night - I would also use those occasionally if I felt like a splurge of luxury. I figure the whole trip cost me about $3500 US including the plane ticket - pretty reasonable for a month long motorcycle trip.
People were outstandingly friendly, fantastic scenery, some nice roads,
cheap to travel, etc. If you take a look at my web page below, you'll find a link to some of my trip pictures and my journal.
Bruce Clarke --- 2011 Kawasaki Ninja 250R (black)