Join Date: Jun 2001
Location: The road less traveled
Programs: UA Gold MM, AA EXP, Delta Platinum, Marriott Titanium, HHonors Diamond, Natl EE, Hertz Platinum
Posts: 5,189
TrojanHorse, if I were you I would definitely shoot for UA over AA. Since you live on the East Coast and with the new codeshare deals between UA-US, having elite status on UA will give you more flexibility than elite status on AA... IMO.
Of course, it depends on your routing too. UA and the Star Alliance has a route structure second to none. If you're keen on keeping the CO status, here's what I would do:
75k - CO (NW, Wings)
50k - UA (US, Star)
25k - Alaskan (AA, CO, and others)