We had asked Aviro to soundproof a room for our two year old (insulation and new drywall).
First off the work done was great, I could not have hoped for better. Additionally they were professional and friendly; taking the time to explain what they were doing and providing different options where appropriate. They also were able to work to a tight deadline and come in on budget without any hiccups.
In short they were great to work with and we will most definitely be using Aviro for future projects we have planned.