I was recently comped to Gold (as a Platinum Starwood & Diamond Hyatt), and was interested in seeing how Hilton treats its mid-level guests. I must say, I was very pleasantly surprised. I arrived Friday evening at the O'Hare Airport Hilton and was greated by the desk clerk with my Tower room reservation all set and a letter from Hilton which had 2 free drink certificates, 10% off any hotel restaurant, free bottled water, and a breakfast certificate! And here I was only a mid level--
WOW! 
At Starwood & Hyatt, even at their top tier, I'm generally not treated as well. Now, I know that properties vary, and I'll probably not experience this level again, but it was a really nice introduction to Hilton Honors