Bose is overpriced for the quality they offer. If you are keen and liked them, you can go ahead. But do read my article
Home Theatre Blues - Part 3: The right speaker system and then take an informed judgment.
BTW, I am no Bose hater or lover and I own Bose Accoustimass AM-10 speaker system. I have had my reasons for buying them in 1999 (space being the main constraint). And they are still going strong, sound good, etc. But I listen to Cinema sound mainly. When I put on music, Bose are woefully short of performance - the midrange is quite bad.
Even for cinema, the Bose bass module (it is not a sub-woofer) cuts off all frequencies below 180 Hz. And thus the "oomph" is missing.
Secondly, Bose have a very well designed accoustically controlled and dampened listening room where you will get that "extra" feeling. When you put it in home, things are unfortunately different.
For the price of Bose, you can get a much better equivalent speaker system. Go and listen to Wharfedale Diamond 9.2 series for instance. And then tell me whether you really felt like sitting in PVR.