I just got done doing a
long overdue valve adjust on my 06. (52k miles, I should have been overdue for my 8th adjust - it was my third) I was pleasantly surprised to find that while some of the valves had gotten a bit tighter, they were all still within spec. So I set them all to the high end of the spec, and I figure I'm good for another 25k at least.
I really don't mind doing the valve adjustment. It's just all the work getting all the plastic and tip-over bars off that makes it a chore.
I was also pleasantly surprised to see that my camshafts don't seem to have developed any more pitting than the last time I had the engine open. (at 35k) There are a couple of spots on a couple of lobes, but none in the contact areas. A few of the lobes are starting to show a little wear, but oddly on the back (closing) side of the lobes. And though it is visible, I couldn't feel any imperfection in the surface.