I've owned a bunch of Bose speakers (and have refoamed 2 pairs of 901s, a tedious task), and thought they were okay, and the 301 is a nice speaker (though I don't think it was as good as the MIcroAcoustics 3DX copy (I believe Bose' copyright infringement suit over these is what put MA out of business). But new Bose are expensive for what they are, and while they work in some rooms, I don't care for the effect. Some of the sub/sat systems are nice, though the active ones don't seem to last long, based on the number at the dump.
Bose does distinguish itself in having a keen sense of current styles - their speakers tend to look better than the competition and WAF is a potent market advantage. Some are glitzy and loose their appeal as the times change, but the 901 in all its iterations is a handsome speaker.
They also distinguished themselves in their marketing - they marketed to the public, not the audiophile public, and they create the impression that they are the acknowledged leader in speaker making, both by saying it, but by the absence of any competing claims in mass market literature - this may have changed since the internet wiped out magazines and newspapers. I think this is the real cause of Bose bashing - the fact that for decades, when audio equipment came up in conversation or when advice was asked for, people who actually knew a lot about speakers were assured in no uncertain terms that Bose was the best. Hear this enough times, and you'll start ranting, too.
I object to Bose because of their suing anyone who gives them a poor evaluation (and then whining because magazines won't risk including them in evaluations). They almost put Consumer Reports out of business because in a review of the 901, CU said the image 'wandered' rather than saying it was imprecise or blurred or whatever, and they did put at least one European magazine (Dutch, I think it was) out of business. While suing MA over the 3DX was ridiculous - tweeters that can be aimed is not exactly anything new - Bose has the deep pockets simply to litigate their victims into submission. I don't like that, and am happy to bash them for it.