Sound comparison with Bose
The first thing to notice was the difference in size; the SoundDock is considerably smaller (though not necessarily better looking). I probably prefer the look of the Apple product -- cleaner, over all.
Then came the performance comparison. Overall, I was surprised to find that the Bose sounded better. I listened to cello suites, classical guitar pieces, and female voice, both jazz and pop (is Sarah McLachlan pop?) The SoundDock had considerably better requency separation; the cello was cleaner and crisper. On the HiFi, it was muddied. It also sounded like the intruments were in a hallway, whereas on the SoundDock it sounded like I was in a more intimate setting. I found similar effects listening to a couple different jazz pieces -- Winton Marsalis for trumpet and Joe Henderson for sax.
McLachlan's voice sounded pretty good on the HiFi, though perhaps not quite so clear as it did on the Bose; the real difference on that tune was the instrumentals. On the HiFi, I could barely make out the guitars and other instruments whereas they were prominent (though appropriately so) on the Bose.
The HiFi did a fine job on other, more aggressive sounding pop/rock tunes; it displayed serious volume and substantial base. In addition, the separation of the tweeters allowed for genuine stereo separation -- not plausible on the Bose.
Perhaps the midrange/base is being asked to represent too wide a frequency band on the HiFi. Perhaps it needs a crossover tweaking. I don't know. But if you listen to classical or jazz or voice, and value frequency separation and clarity at the upper frequency ranges, Apple's HiFi will perhaps suffice, but it certainly doesn't match the Bose, and at $50 more, it is, in my opinion, not a very good value.
SOS
Al PowerBook 15, Mac OS X (10.3.9)