In Jul 2001 we (fdx) had a guy that was upgrading to boeing capt. His wife also flew for us and they wanted to diversify a little bit. He went to American just prior to 9/11. Needless to say I don't think he likes the decision now.
I thought about that for awhile. Instead of leaving and giving up seniority, vacation etc, why not just cut your standard of living down to 1st yr pay level for a yr or so. Bank the difference and in the end you would be way ahead in terms of money.
Lots of advice out here. Time to step up and make that Captains decision!

Good Luck...
Past...