Wow the hostility in this thread. I had to go to a 7500 mile oil interval to even notice my 2006 using any oil. I think GM has made some great motors. They have been swapped into practically everything.
The interior in my 2006 suits me fine. Other than one rattle I had to take care of it's quiet. My 1990 was silent as well, it got beat down dirt roads its whole life. Both comfy and laid out well.
That said I'm a complete GM "fanboi", and I think the GMT800 platform was the best made by any manufacturer ever in the world, ever. But I do think the current GM HD frames are rock solid. My opinion.