If you havent already splashed out on a BOSE system, Id strongly reocmmend you visit the digital TV forum (http://www.dtvforum.info/). There you will find very heated discussion if you search for "Bose", and youll find plenty of cheaper (and dare I say better) options, some of which are very discrete. Youll also find information on installers.
Youll find the name BOSE gets much the same reaction in home enetertainment forums as the mention of Choice surveys here!!!
Sorry to rain on your parade, but I almost went down the BOSE route (a former colleague sells them) until I discovered some of the tactics used to make the systems sound better in demos than they are. You will notice that Bose systems are never demoed side by side with other A/V equipment, nor will the company disclose specifications - where even the cheapest make publishes full data.
I might stop there....