So here's my dilema that I am hoping to get some good feedback on. I am moving from SEA to Long Island shortly. I am a CO Gold right now, because the majority of my flying was SEA-EWR, and SEA-TLV, and I love CO's service. I would stay, but for where I will be living on Long Island, EWR is just not a realistic option very often. JFK and LGA are about the same however. So the question is, do I switch to a new program, and if so, who do I switch to? Getting matching status for this coming year would be sort of important as well.

My important destinations are SEA, IAD/DCA, and TLV.

- DL is the obvious candidate, as my Pres Club membership will still be useful, SkyTeam is familiar, I still have lots of useful miles, they fly to TLV and have a partnership with EY. However, I've not been a huge fan of DL's service the last 5 years, and the FFers seem unhappy with the direction the program is going.
- AA is the next possibility. The program offers some perks that SkyTeam doesn't, good service from both airports, and the EY partnership as well. I don't really know enough about the program to know if the switch makes sense given all that I'd be giving up at the same time.
- UA and CO seem to come in 3rd place, as neither is extremely useful for all of my frequent routes, but I am willing to hear arguments.
- Please no arguments for B6. They're not useful to me from a business standpoint, or a reward standpoint where I will be mostly trying to fly to TLV.