I ride a Brooks B17 special and absolutely love it. It is the most comfortable saddle that I own. One thing about buying a Brooks is that they need to be broken in. Having read your other thread, it seems that you are picking up everything when you arrive, putting it together, and heading off on your 2k journey.
A Brooks saddle can take a significant amount of miles to break in, and be very uncomfortable in the process. You may want to buy your saddle at home, put it on a bike, and start the break-in process before you leave for your trip. Just take it off and bring it with you. Your but will thank you.
On the other hand, mine have always been comfortable out of the box. YMMV
Just something to think about so you don't start your trip on a painful note.