I am using the xantech product for whole house distro. You can research "A bus" which for me is working OK. If you are used to very high fidelity sound, you will notice a difference, but otherwise I like the convenience. You can choose to use a local input such as IPOD or cell phone- which we use all the time in the bathrooms. The sound on local source is definitely better. Or pick your source, which is very cool for parties, etc.
Some other things that I have found useful are the JBL recessed speakers for the bathrooms, outdoor speakers made by Carvin, which are a great value for the sound quality, and we use the Airport express with the optical out and Remote app. for music and wireless networking.
There are better systems out there depending on your budget and requirements, but they can also be many thousands of dollars. I have also hooked up a remote for my G4 phone that controls the amp located under the stairs in the basement via IR.
Let us know what you go with and how it turns out.