My only elite program is AA (PLT-will travel about 70K miles this year) as they are the only airline other than CO that offers the most non stops to the destination I go a lot, particularly MIA where I have a second residence. While I would probably like CO more as it still operates as a full line carrier, EWR is one airport that I try to avoid. DL has increased particularly its JFK service, however, I like to stay true to an airline that has not done the pump and dump with its pension plan.

The stickers (upg) are the prime benefit followed by priority boarding.

Since I have no burning desire to use EWR I would not attempt to ask CO to match my status. And again some of what DL has done to its employees makes me queasy.