I'm dumping DL too.

I tried an ordinary coach fligh on AS and it was excellent. (plenty of legroom in coach and a decent snack on a short flight). That's more than you get in First on DL!!

Last Sunday I took a flight on WN. It sure seemed like they give you more legroom than DL does in coach. WN's seat pitch seemed no worse that First on the new DL 757/737's.