I'm torn. They've fixed a lot of the bugs from 05, but they've taken a lot out. There's no more player highlights at the beginning of the games, there's no more cheerleader dances at halftime, I don't remember seeing anything special as far as a celebration when I won the AFC championship, and they still haven't fixed the bug where NOTHING comes out of the cooler when my coached gets splashed after winning the superbowl.
What I do like is the new features they put in. All kinds of options for changing routes on the fly, and they have this new "QB vision"... basically puts a lit-up cone in the direction of the reciever you choose (or the hot route for the play)... it really helps out, IMO. I also like the new audibles for line control and defensive adjustments.
Best of all is the truck stick. I don't remember that being in 05, but it basically means bigger hits on both offense and defense... which usually translates to better runs and getting past at least one extra blocker on the run. I've also had more forced fumbles when using it on defense.
Overall, I give it a 9/10 cuz it's gorgeous and gameplay still kicks ass. I just don't like that they took stuff out.