We used Nivasa when we moved into our first house. Suhail, Nivasa's owner, was excellent - at the beginning, he dropped by our house a number of times, to take meansurements and discuss our objectives. He then sent us a list of various products to choose from, with his recommendations, and, once we made our selections, purchased and installed the systems. He displayed extensive knowledge about everything from tvs to audio systems to doorbells, and was able to quickly find solutions to unforeseen problems. He was punctual, his work was never rushed, and the end result was fantastic.
A note about the cost: we found Nivasa's rates reasonable. The cost I've noted above includes the cost of all hardware (tvs, speakers for the house and for outside, dvd players, etc.) that we purchased through Nivasa.