Continental:
Best - unlimited domestic upgrades. Free booze in the President's Club.
Worst - HoKeY fares. An absolute disgrace. No soup for you, Continental!!! 30-day upgrade rule. Awarding bazillions of OnePass miles and then making people jump through some very seriously stupid hoops to use them any place other than domestically.
Personally, the cons outweigh the pros so badly on this airline that I'll probably never fly them unless drastic changes are made to their program.
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"Those who would sacrifice liberty for safety deserve neither." - Ben Franklin