I had the XLE for a while and the sliding rest is better for me since I had it forward. However the "detent" which is supposed to keep it there is weak so it easily slides back and forth which is annoying. The Avalon has a locking mechanism so it stays where you want it to. I think the foam cushioning in the TCH armrest is too thin and mine is now compressed where my elbow hits it, resulting in discomfort. I now have a small pillow there to rest my elbow on for my hour long commutes.