If the OP had an additional truly compelling reason for making the leap, that could tip the scales. For example, a strong need or desire to move to SFO might be a good reason. But NONE of the other WB bases can match SFO's WB flying. IAH WB flying arguably sucks (except for guys with girlfriends south of the border), and even East Coast WB is not all that compared to SFO. Plus, IAH is a comparatively senior base to boot. If the OP had only been on property a couple of months, that would be one thing but with 1500 already behind you and lots of retirements coming rain or shine... stay put, you'll have a great career at DAL.