I wanted to take a few minutes to recommend these guys if you live in the Portland area. I am up in Kelso, they travel around.
I had 5 bids. Dave and Jose from Turcios were willing to work with me to install things the right way, the way described in these forums. Several other companies wanted to do it their way or their prices were prohibitive.
The best part is, the guys that came to the bid are the guys doing the install. No need to reexplain everything to a fresh crew.
My install is DD + GG between the joists, whisper clips and DD + GG. So far these guys have been great. Here is a pic of them doing the DD + GG between the joists.
I know prices vary in different parts of the country, but would you mind sharing your high and low bids so we can see what the range was? Have you figured out what it is costing you per sheet or per square foot?
I am happy to say the job is wrapped up. Here are some final pics. If you are a home theater person, this is a good group of guys to work with and they will get the details right. To recap, we did the double drywall with GG and Sound Caulk between joists, double drywall with channel and whisper clips and green glue on the ceiling, and double drywall + green glue on the walls. It was quite the install!
PS: The walls are only primered in this shot, so ignore that details
PS2: So far, the sound proofing seems like a success. We still have a basement door to replace though. Final verdict is out until that is complete and GG cures. Massive improvement though so far.
Great! It is definitely worth it if your schedule allows for the DIY route. Have fun... and be sure not to cut those holes too big for the outlet boxes. My goodness, that was one mistake made on this job I had to repair many outlets.