Good and bad here — the seats themselves are really comfortable (thick and plush as VX advertises) but on a fully packed flight, the thick seats end feeling pretty tight. So if you're fairly tall, big or like a bit of extra space, it's good to know this.
The splendor of Mt Ranier in full view on my 7am SFO-SEA flight - sit on the right hand side window. I tapped the guy next to me twice to look at it, which he seemed to appreciate! The flight was otherwise great, but this was the highlight.