I am sure that .com is the best domain to get but it is a real toss up between .net and .org once .com has been taken. It seems to be a matter of personal opinion. Living in Spain, outside of the US AND Asia!
There is no actually difference between them. I cannot differentiate between the two as well. But as much as possible use .com TLD
Depends on domain name, for example you will get good domain name, but .com .net is taken. Better think about domain name, make it unique, and take all .com, .net, .biz, .info
.travel is also registered!! I am thinking of two options..... xxxxxxxxxxxxxxxxx.org or xxxxx-xxxxxx-xxxxxx.com So, 1 name made up of 3 seperate words or 3 words seperated by -?