I really like the rear suspension performance on my IP-036 with the Fox CTD BV shock and twin-loc remote. I can select full lock, partial lock, or full open on the fly. If I didn't have the remote, I would most likely just leave the shock in the partial lock (trail setting) as that setting provides enough travel for fast bumpy down hill runs but is still stiff enough not to be too active when pedaling uphill.
So I think much of the rear suspension performance is dependent on the shock design/tuning. For me, I like a stiff rear shock for my XC/trail riding. Some people may like a more plush setup in which a different shock setup is better for them.
turbo, as you get some miles on your XX1 setup, please keep us updated as to if you have any problems. I was just reading that SRAM released a Type 2.1 clutch system late last year in all of their rear derailleurs. There have been lots of complaints about the r/d creaking, possibly SRAM addressed this with a minor update. Please check and let me know if yours is a Type 2 or Type 2.1.