Picked up a pair yesterday from one of Bose's stores here in Sydney for A$449, very happy with the purchase.
I'd say sound quality is on-par/ slightly better than my current wireless headphones, the sennheiser urbanite XL wireless. Super comfortable with a nice low profile. App is very handy for managing multiple connected devices, juggling between an iPhone, macbook, windows desktop, and sony tablet without a hitch. Haven't used the QC25s before or any NC headphones for that matter, so can't compare, but the NC on these are a revelation, changes the game on commutes.
Will really put these to the test on a trip/MR coming up this week with a little over 30 flights over 5 weeks.