I would consider the Revel Performa3 M105s as well. In sound profile, they will fall between the Wharfedales and Dynaudio's. The Wharfedales are very warm while the Dynaudio's are neutral. The B&Ws will be a hair forward. I have listened extensively to al four of these speakers and I ultimately settled on the Revels. It will very much be a matter of personal preference.

The CM6s do not have the bass response of the CM5s Jade 3s, etc... Like the Kef LS50s, you will need a subwoofer with it. I personally prefer a subwoofer with all of them, but that is still personal preference.

You are spot on regarding issues dealing with lower impedance speakers. Additionally, even though those speakers say they can be driven by 50w amps, you won't get best results. With 50w, you will drive them without damaging them but with a more powerful amp, they really open up and sound much better. 70w to 80w will sound dramatically better so your integrated choices above are excellent.

I find that both NAD and Marantz are warm in sound profile though NAD is a bit warmer. If you need tone controls, those would be the two I can think of that have tone controls and adequate power. I think that the NAD has a better amp section and will do a better job driving these speakers.

Best bass performance you will get out of bookshelf speakers is going to come from the Monitor Audio Silver 2s. I believe they are $1100 a pair and are a really nice speaker and go down to 40hz. The Monitor Audio Gold 100s go to 42hz and are a pretty amazing but they are $2199 to $2599 depending on the finish. Both are available from Crutchfield with their standard 60 day return policy. Monitor Audio speakers are neutral but very detailed. I feel that the Golds offer better imaging and a deeper soundstage.

The next best alternative would be the Wharfedale Jade 3 which go to 45hz. I listened to them side by side with the Monitor Audio Silver 2s and the Revel Performa3s and they are awesome but a bit warm.

For an integrated, I would look at the Peachtree Nova 125SE. It gets a B rating here at Stereophile. It is a wonderful, extremely detailed integrated that delivers big power. Peachtree is a bit warm and would compliment the Monitor Audio speakers supremely well. 125w is a lot of power to drive a pair of bookshelf speakers and there aren't many under $2k that deliver that much power. The Rogue Audio Sphinx at 100w or the Musical Fidelity M3si are awesome units that would compliment these speakers well.

The huffing sound is irritating. I am surprised to hear that critique about a B&W speaker but we are each sensitive to different sounds. Could have been the room placement - too close to the wall or something like that - but you can't unhear that.

The warmth I am mentioning is what you are thinking, the highs will be a hair rolled off. I stand by the recco of the Peachtree as long as you can live with one analog input. I think that for the money, it is one of the best units on the market. It has a great internal DAC, is extremely detailed and delivers a huge amount of power.

If you need more than one analog input, my next choice would be the Rogue Audio Sphinx which is a tube hybrid. I currently have a higher end Rogue Audio Hydra power amp driving my Revels. The combo is exceptional and I am a huge fan of Rogue.

The Musical Fiedelity is a bit more forward and will sound solid state. Paired with the Wharfedale Jades, it would be perfect as the Wharfedales are warmer than the Revels. Paired with the Revels, you would likely get a very neutral sound.

This choice is truly very personal. I like Revels open and slightly warm sound.. Additionally, the tweeter design works really well off axis which is important in my room. I was also very pleasantly surprised to hear an exponential improvement is clarity and soundstage when I upgraded from a little Rega integrated to separates.

Do yourself a favour, If you really want a bookshelf speaker, audition the Wharfedale Denton 80th Anniversary Limited Edition, they are on sale for $499 at Music Direct. I have spent 2 weeks with them and they are amazing! I really don't know why more people have not listened to these. they are phenomenal, better in my opinion than the Diamond 10.1, and Diamond 10.2 They are warmish and never tiresome. If you decide to go with a floor stander, if you want to be under $900 for a pair, go and look at the Monitor Audio Bronze 6's they have just been recently reduced on the Audio Advisor website. The base they produce even with a 60W receiver is visceral and they don't have a large footprint. Their sound is not harsh and they sparkle with all genres of music. If you want to stay under $1500, look at the Monitor Audio Silver 6's they are a quality speaker with a flawless finish, and incredible build quality.
Good luck,
Ari