We wanted a very secure building, and that's what we got. When hurricane Georges passed by here we were hit with winds of 110 m.p.h., but it didn't hurt us a bit. Inside, you can't even hear storm.
Traffic noise is eliminated, too.
We are located off of a busy highway where 60,000 cars per day pass by, and it's still completely quiet inside. This building cost slightly more than the same building constructed with 2x4s would have, but the savings on cooling costs made up the difference within two years.