I am planning a trip to southern France the end of May. We've already rented a house. Now I need to book the flight. Am thinking about booking a roundtrip CMH-MRS or CMH-MRS and a return of CDG-CMH. One possibility is CMH-CDG roundtrip using the TGV.

I think I have lots of flight options with all the Skyteam members now - NW naturally, DL, CO, and Air France. Am I missing some? What would you consider are the pros and cons of using the various Skyteam members?

I've never flown Air France before. I know there will be no international upgrades for any of them. With NWA, I should get upgraded for the domestic portion - I'm plat. With Continental, I would likely get only 50% credit for EQMs. EQMs are important to me. Currently DL and AF offer fares quite a bit lower than NWA.

Are there any other pros and cons I am missing between these Skyteam members? Sorry if this was covered recently. I tried to use the google search but it didn't seem to work too well. Merci!