(also posted to the CO forum)

I'm investigating a new FF program (currently a PM at DL), and would like some assistance with the differences between the CO and NW programs.

To the best of my research, the differences are:

CO uses EUA exclusively, while NW allows agent action
CO allows full credit for NW CyberSavers, NW is 250 miles only
Differences on segment qualification (not relevant for me)
World Clubs have more affiliated locations than President's Club
NW limits baggage to 50 lbs, CO is 70 lbs

Similarities are:

Domestic upgrade qualifications
No international upgrades except for mileage upgrades
Cross-airline upgrades probably done after own FF members

Unknown (rumor) factors:

CO's EUA discriminates on the basis of fare
Switch at the gate (from the Nonepass website)
Does NW have any restriction like HoKeY fares?

Anything that I have left out? Any comments or suggestions?

Thanks in advance.