Well, an update, if anyone's interested!
I've accepted the offer, and will be heading west at a time to be determined--in all events, no later than the end of February. I told the senior parter at my firm today--he couldn't have been more gracious. It helps that he's familiar with (and knows the senior partner at) the firm I'll be joining, and realizes I'm not moving across town to a competitor. I nearly broke down during the conversation when he told me I was welcome to stay as long as I wished. I've just never had a position where I've truly enjoyed working with everyone. Now I have to go around and tell all the other partners.
So it's off to the west with me; Gail will follow at some point, probably around June or July. No big thing--we've been separated for months on end before. Plus, airfare is so cheap right now that I should be able to fly back here for odd 3-day weekends--I can't miss out on the remainder of our Philadelphia Orchestra subscription!
It's overwhelming and emotional, but it certainly feels good to have "gotten off the pot," if you know what I'm saying!
Thank you so much for your posted comments--they gave us a lot of food for thought as we slogged our way through what, in the end, was about a three-month decision.
Look out, Johnny E--I'm going to darken your doorway soon!