I was finally able to get a decent price on upgrade on UA flight - SFO - London Heathrow. Originally I paid $250 for Economy Plus ticket. I was able to get a Premium Plus ticket for a little over $150 more. It is an aisle seat (would have preferred window) but probably a much better experience than Economy/

How does food/beverage compare on Premium Plus vs. Polaris? Also how are entertainment options. Is there an onlight flight map and camera?

Will fly in about 3 weeks.