OBJECTIVE DISCUSSION:
I do NOT put much value on Consumer Reports audio recommendations. Nevertheless, in the 2001 Consumer Reports Buying Guide, page 292, two 3-piece systems are rated:
Bose Acoustimass 5 Series III, and
Cambridge Soundworks New Ensemble II.
Both received a "Very Good Performer" summary, but the Bose received a slightly higher overall rating.
The Bose cost 50% more money ($600 vs. $400).
SUBJECTIVE DISCUSSION:
In my opinion Bose produces niche products, focusing on features such as size, power handling capability, and convenience, rather than sound quality. I remember Bose literature talking about 901 power handling capability in these words: "...no limit in non-commercial applications..." Bose spends a lot of money on advertising.
I HAVE purchased a Bose system based upon convenience and price considerations (for my father who has a hearing aide and who wouldn't notice quality differences anyway). However, I believe many (most!) other products offer better sound quality and better value for the same money. I bought Dad's system at Costco (a warehouse outlet like SAMS, etc.). I have never seen a quality speaker system at that type of warehouse outlet.
Admittedly, I am an audiophile snob, and my CD system, made of primarily used and demo equipment, cost over $10,000. Generally, Bose products don't even qualify for a review in the audio magazines I read (Stereophile, The Absolute Sound, Home Theater, The Audiophile Voice, etc.), but products recommended by others in this tread do get reviews - good reviews.
I recommend looking at these brands as good combinations of value and sound quality. They all have products that have been favorably reviewed, and offer low to moderate cost solutions: Paradigm, B&W, Atlantic Technology, NHT, PSB, & Pinnacle.
Regarding power capacity, even the most exotic home speakers aren't rated to handle 1000 watts. My friend's $15,000 Avalon Radian HC's (High Current) are only rated for 500W. Audiophiles frequently buy huge amplifiers (my friend's cost $4,000) and do most of their listening in the very lowest power range of the amp because it operates in a pure class "A" mode rather than lower quality class "A-B" mode at higher volumes. My own inefficient speakers (89db sensitivity) produce more than 105 decibles in my living room from a mere 180 watt amp, which is loud enough to cause permanent hearing loss over time.
In summary, speaker performance and value is all about an individual's own definition of "good." Some are satisfied with Bose' level of sound quality, while many others (professionals in that business) do not recommend those products. I am among the latter.
EDIT: PS - I have spent time with 901s, and recently experienced a $400,000 Wilson/Levinson home theater system; that was the equipment cost only - it excludes the cost of the huge wing on the mansion.