[Note: BestBuy carries 2 different models of B&W 685 S2 speakers. The model shown on this page, 685 FP35343 (SKU 4827037) - the model I bought - has a 1" decoupled double-dome aluminum tweeter; the other model, 685B S2 (SKU 1277365), has a 1" aluminum dome tweeter ... and costs $50 less. I initially posted this review on the wrong model, but can't figure out how to delete or edit that review.]
I recently bought a Sony STR-DN1050 receiver at BestBuy. I also bought the Sony CS5 bookshelf speakers and the Sony CS9 active subwoofer, but felt the CS5 speakers were too bright / trebly. I replaced them with a pair of Bose 301 speakers, and was surprised at how hollow the sound was (I had run Easy Setup on the Sony receiver for calibration, but may not have configured the subwoofer correctly).
I returned the Bose 301 speakers and was intending to purchase the Pioneer SP-BS22-LR bookshelf speakers and the Pioneer SW-8MK2 active subwoofer (both designed by Andrew Jones), but I wandered into the Magnolia studio while at the store, and after comparing the Pioneers (which the salesperson brought into the studio for me) to the B&W 685 S2s, I was amazed how full the B&W sound was - highs, mids and lows.
I should note that my primary use of these speakers - and other audio components in my system - is listening to music (mostly rock, jazz, folk, bluegrass). I did play a bit of The Dark Knight on my BluRay player, and they sounded fine.
I did not do a side-by-side comparison between subwoofers. I've read some less-than-positive comments on AVSForum about the B&W ASW610 subwoofer, and after a few weeks with this setup I'm still tinkering with the settings on the Sony STR-DN1050 and the B&W ASW610. I mention this here because I read another review here (and another elsewhere) suggesting you don't need a subwoofer with the B&W 685 S2s. That may well be true ... but the more I've read, the more I believe that a subwoofer rounds the sound out nicely. I've tried the speakers with the subwoofer disabled, and I like the overall sound better with the subwoofer enabled.
One thing I did not initially note about these speakers is that the are considerably deeper (12-3/8") than the Sony CS5, the Bose 301, the Pioneer SP-BS22-LR and all of the other speakers I saw out on the main floor of BestBuy. I did not think to examine the depth of these or others speakers in the Magnolia studio. The B&W 685 S2s are designed to be mounted on stands, but due to our room configuration, and constraints imposed by my wife, I have to mount these in shelves, and they overhang the 11" deep shelves by about 2". [Note that the 685 FP35343 shown on this page is mounted on a stand, but the stand must be purchased separately.]
The B&W 685 S2s are about 5x more expensive than the Pioneers, 3x more expensive than the Sony CS5s, and 2x more expensive than the Bose 301s, but after listening to the B&Ws,, I knew I would always be dissatisfied if I didn't upgrade.
My last speakers were a pair of floor-standing Laser 150s, which included 10" woofers, and they have lasted me 30 years (my daughter has them now), so I'm hoping the extra investment will amortize out over a long period.