I'm planning on commuting back and forth to my friends in PBI from PIT a few times in June, and find it's somewhat cheaper to fly to FLL, which is usually where I fly when I go there anyway. Thing is, I'm definitely not going to take US... they want to disregard PIT, PIT's travellers can disregard them! I looked, and the fares on AA and CO are within $5 of eachother. So, one of those two will be my choice. My question is, since my carriers I'm on every week or so (NW or US) are not my choices here, who should I pick? AA's MRTC is tempting, but I get WorldPerks credit on CO (as far as I know....?) My uncle is a frequent (DAILY!) traveller, and has nothing but the best to say of CO, so I'm interested to try them, too..... Haven't been on them for awhile.... I think my last was a NW codeshare through IAH a few years ago..... any input? All your help's appreciated!

Regards