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Build a pair of A/V-1s or 2s add any decent integrated and you are all set. I am a Marantz fan, but I also love the sound of NAD. Another you might look at is Cambridge Audio the 540 and 640 integrateds sound nice.
DEFINITELY focus on the speaker FIRST, since they will make the biggest difference period. I haven't heard Vincent either, but any of the others mentioned will do fine with good speakers.