Magma - I must say that I am surprised with your recent reviews. While conceding the fact that individual experiences will be different owing to differing preferences, I feel that speaker characteristics such as bass response may not change much.
The MS904i is not even a patch on the Wharfedale Diamond 9.5's bass response. When the Wharfedale SW150 subwoofer is paired with the 9.5s you almost get the feeling that the subwoofer is not upto the floorstanders' bass response! About the MS tweeter, yes if you are a fan of very forward biased tweeters, these could be it. However I suggest you listen to the voices of, say, Lata Mangeshkar or Chitra on the MS and let us know if you think they are still speakers that you can listen to in the long term. Or you could even try some violins.
Lastly the Jamo Concert series are in fact in a different class of speakers from what we have been discussing in this thread for the most part. The C405 is a midsize floorstander of amazing clarity with a lovely midrange. However I distinctly remember being quoted 40K for this speaker. If it is indeed 29K as you say, this should be a slam dunk! This is a far better speaker than the others you would get for around 30K. It may not have as much bass response as the 9.5 but it does most other things very very well. Especially the midrange.
As for the Denon integrated amp, my complaints lie in the area of clarity and details. A comparatively priced Marantz or CA amp sounds better any day. The Denon's strength though is bass. It brings out bass better than the other two amps.
As for your final choice I would still choose the BR2 if I were you. The B15, while it can be used as a front speaker, is mostly used as a surround speaker. I also am surprised that you have not auditioned the Alpha B1 till now. They are well within your price range and have a lot of good things to offer. What you sacrifice with the bass in BR2 (which is not much, really) you get back in the midrange. The PSB may be a tad more sensitive which explains the movie sound effects you talk about, but the BR2s are no slouch. For vocals I would still prefer the PSB - they have a slight forward bias for voice that I have come to love, but instead of the Image B15, I would look at the Alpha B1 to see if it satisfies you. If not, the B15 can come into the picture. The BR2 is an untiring speaker. I have listened to a Marantz - BR2 combo and it is very satisfying. It may not be the most immediately impressive combination but it is certainly good for long term listening.
It is also important to finalize on the amp at this stage. Your preference about the amp may help narrow down the speaker choice as well. Hope this helps.
I did not like the F1s in my NAD<>F1 paired audition anyways.
