This would have to be reason number 22 that I'll probably never get very far career-wise inasmuch as I would happily take an upgrade to F whether my boss would be with me or back in Y.

I don't begrudge my boss the perks of bossdom... namely the more expensive lifestyle that he can afford with his position. He ought not begrudge me mine. If he feels slighted, he's probably way too insecure with himself to be an effective boss anyway. In that case, the odds are I won't stick around working for him long enough to care whether or he not he was miffed about me leaving him in Y.

Business politics isn't my thing. Don't expect me to feel bad that you can't enjoy the perks of F just because you spend your money and leisure time on golf and I spend mine on mileage runs.

That's my .02.

Edited to add: this does all go by the wayside if a client or other business partner is involved, however. I do play business politics in those cases.