Mint is streets ahead of VX F even food-wise. VX F food is nice, but minimal in quantity for the long flights. Tiny salad doubling up as appetizer by adding two slices of prosciutto. Well now ... Mains are on the small side, tho' much better quality than what you get on legacies, but not much better than Mint. Dessert is a small, sometime stodgy cake. Wine is OK. Seating is miles worse than Mint and AA F and still a lot worse than AAJ/UA F/ DL F on transcons. The VX product is deeply uncompetitive on the premium markets right now.

On BOS-SFO, as MikeBOS says, you can't buy upgrades for the simple reason that VX F is competing with UA crappy old 737/757s on direct flights. Being in SF, I really want to make VX work for me, but on the JFK market they fall far behind. If they aren't my obvious choice for SFO-JFK then I'll never fly enough for gold status, so I may as well look somewhere else across the board. That's my conundrum right now.