I have been running 40psi all around for the last 11k miles and have been pretty happy.
Running 40 psi must be why I get constant 28 MPG. From the factory my LR4 had more psi than 35 psi in the rear I remember correctly.
I usually run 34 psi front and 38 psi rear. I'm willing to sacrifice tire wear for comfort, but my tires have worn pretty evenly anyway.
x2 Above 35 for me isn't worth it and often ends up causing something to rattle loose.