my wife and i are committed AA flyers
but when i was able to get "deals" on UA we tried p.s. and haven't gone back to AA since
simply no comparison flight-wise, and lots more departures, too
but- we either buy discount "Z" or ameniti 2-for-1 or cheap "S" and use miles to upgrade- point being we always have booked seats in business class, we never hope for an upgrade- there are so many premium travelers out there that your chances are minimal- even though others claim great success
we just don't want to take a chance
even if you buy miles from UA at 2c each and use 30k for the r/t the total may be $1k or so- not bad for transcon business guaranteed
or ask ameniti for a deal- (Z won't work 2for1) if you are 2 pax
and yes UA gave my Premier Executive just for showing my recent AA statement