I tried the "Q" once in my 01' Dodge Durango V-8 and found it to be an excellent oil to use. Since I'm a synthetic fanatic I usually stay close to my tried n' true Mobil 1 but just once I strayed away from it just once.
How it compares to PP I can't say but if the price is right then go get it. Make sure you check the ratings on the back first.
Very good oil although it is now Ultimate Durability( formula change to go with name change? ). They say the additive package is not quite as good as that in PP but it is still a very good oil. I have run it a few times and have a couple family members running it with good results.