I think the answer depends on what your goal is and who your audience is.
Are you are writing just to journal about your travels without much concern about attracting a wide audience or monetizing your blog?
Are you writing to share primarily to share photos and stories with family and friends, again, without concern for attracting a wide audience or monetizing it?
Or are you interested in promoting your blog, attracting that wide audience, and making some money?
Since you were using Travelpod, I'm guessing it's one of the first two. Either Blogger or Wordpress.com should work fine for you, but neither of them specializes in travel. You can use a travel-related theme, though.
If you are looking for something more along the lines of Travelpod, consider http://www.traveljournal.com/, http://www.mytripjournal.com/, or http://www.travellerspoint.com/.
If you do have a serious interest in creating a serious travel blog, Wordpress.org is probably the only really good option. You'll want to have your own domain and you'll probably want to buy a professional theme (although there are some acceptable free ones).
If you decide to go with WordPress, you should be sure you understand the difference between Wordpress.com and Wordpress.org. Wordpress.com is a place where you can create a blog that is hosted at that URL. Wordpress.org allows you to host a wordpress blog using your own domain and your own web hosting provider. Many providers offer built-in wordpress support and will sell you the domain of your choice (provided it's available), so you can do that all in one package.
Good luck!