I switched from 9C to 2A during checkin. I had a flight 8hrs prior and it had all the seats available. Kept checking all day and didn't move but the other seats were slowly getting taken.
I can tell you row 1 and 2 are 10x better than the standard class. Also the flight prior I was on the 777-200 V4 and all those seats are nice.
I spoke with the flight attendent and both passengers on each of the flights and unanimously all dated the new polaris. Passengers said it felt claustrophobic and flight attendents say it's very hard to serve the customers in there.