If I don't find any specials offered elsewhere my go to is orbitz, they will throw in a free excursion with each cruise. No issues in booking with a major company like expedia to worry about.
11 cruises in 2012, 90 nights at sea visiting 15 countries
8 cruises in 2013, 56 nights at sea visiting 7 countries
Next cruise: None scheduled
PM me if you need a cruisemate for any Europe, transatlantic, or Panama Canal cruises
Date, ship, cost pp