We often criticize Bose on these and other boards, but they are a company that has essentially embraced the idea that accuracy isn't what people want, they want a sound that pleases most people who hear it, audiophiles be damned. They hit the mark, a huge majority of the general public likes the bose sound, and even prefers it to more accurate offerings. Of course, there is a great deal of marketing out there that makes people think what they are hearing is an accurate portrayal of real music. We know better, but most don't.
The room, as some have pointed out, is critical. The last thing I want to do is listen in an anechoic chamber unless I want to bore myself out of my mind. Anybody who has had the displeasure of listening to a heavily damped room, or (quasi-) anechoic chamber knows that it's positively terrible sounding. Room acoustics, unlike some have suggested, are pretty darn well understood by some. The example of Geddes' ideas or Linkwitz's are good ones. Both use methods of directivity (one by use of waveguides and one by use of dipole speakers) to reduce room issues to some degree. Most of our rooms act quite similarly from ~300hz on up. It's the lower freq where wavelengths of freqs approach or exceed room dimensions where things get chaotic and a little more difficult to predict.
As far as the musical vs analytical issue, I don't have a whole lot to add to what has already been said. I'm certainly the type that leans towards tonally accurate equipment over things like speakers that image well, or have a deep soundstage, etc. I rarely get a chance to sit in a sweetspot and listen, I'm usually dancing like a fool with my daughter to some awful music more often than sitting in place with my eyes closed sipping on some sort of alcoholic nectar. That said, I sort of know where Erik and others are coming from. As you move upscale in equipment, gear can become less enjoyable because it is often times more likely that your equipment will begin to reveal problems with the source that will drive you batty.
I get the impression as I have moved upscale in my turntable/analog gear, my perceptions of analogs weaknesses seem to get re-enforced rather than dispelled. Where I couldn't readily identify dynamic range issues with LPs in the past, with the current setup, they are becoming more clear. I'm not sure that I've made the right choices. I'm also not sure that I haven't made the right choices. I'm in a bit of a limbo and can't decide which direction I want to take from here.
I'm also not at all surprised by dogscanskate offing the proacs in favor of dynaco's. There is something very "right" going on with A25s. There are dozens of better speakers out there, but I could be quite content if I were "stuck" with A25s.
Part of my passion for the hobby stems from gear, but in the process, I have become increasingly more appreciative of the music to the point where it is the driver now, not the gear. I think once you reach a certain level of satisfaction with the gear, then you just focus on other areas which is where I am at. It also has allowed me to try to go back to my roots as a DIYer. I like to build speakers, and having some references to compare to is important for me. Right now, I am in the process of building a CDP, a turntable, a pair of speakers, 2 amps, modding a hagerman, and a few others things. My goals are usually to start with measurements to get very close and tweak a little from there. The element of building things give me more satisfaction, albeit psychological, than buying most things.
Enough rambling. I'm boring the crap out of myself. I feel bad for you bastards who had to read that BS.