I've always wanted to try this, and decided to take a long weekend and give it a shot. I used Noico, bought off Amazon at $65 a box (36 sq ft), which was much cheaper than Dynamat. As far as the results...the car is definitely quieter and the miscellaneous vibrations and minor rattles that were present when driving down the road have been virtually eliminated. I haven't done the hatch area yet. Those panels are a lot more tricky to remove. On the plus side, it looks like Acura's done a much better job with sound deadening in the hatch area than my 1G RDX (when I removed that panel, it was just bare metal).
Overall, I recommend it if you have a few days to kill. In all, it took me 22 hours (including cleanup and putting everything back together). It could probably be done in less time, but I also took apart the console and applied adhesive-backed rubber to all the screw holes/joint areas. The console was the only thing that rattled in my car, especially near the touchpad. It's absolutely rock solid and doesn't rattle at all now.
