Personally I would go with #1...very eye-catching. Though perhaps I'm looking at it from an American perspective (the Big Ben(s) :-)) You might consider geo-targeting the second one more at Europe and the other more at America, or giving webmasters the option to select their preferred tour through linkcode or something. (Does not need to rely on making a change at CCBill, IM me if you want to do this without CCBill, not too tough so long as your server likes SQL and PHP) Nice job :-)

-doug