I am happy enough with my Dahon MU P8 for riding in the US and on my Tuesday rides with road cyclists of the Wilmington Trail Club, but for my international travels I think I would like something similar, but cheaper. This would be especially important if the bike were stolen.
My many trips to Maya lands over the years have more recently been to much harder to get to ruins and, because I travel in the dry season, I have found that jungle tracks would be easily passable by a bike with the regular 20 inch wheels on my Dahon. My ideal bike would:
1. Be made somewhere besides China.
2. Would cost $500 or less.
3. Would weigh 25 lbs or less.
4. Would fit into roll-on airline luggage that doesn't cost a lot to purchase.
5. Would have at least a few different gears.
If you have a suggestion that only covers three of the four previous criteria, I would still like to see it. There is no perfection in this World.