I would concur about the Audio Refinement Complete. It's exceptionally good for the money and better built than the others you listed. I've owned the Music Hall CD25 player and it was a wonderful piece of gear but don't have any experience with their amp.
I recently bought a used Creek 4330R for a friend's system and can highly recommend it or anything else from Creek, as well.
I did own a Cambridge Audio 540A integrated and while it sounded pretty good, it was not in the same class as either the Audio Refinement or the Creek. I would buy one of the latest Rotel integrateds before I would buy another Cambridge. All the ones you're considering and that have been suggested should work fine.
I recently bought a used Creek 4330R for a friend's system and can highly recommend it or anything else from Creek, as well.
I did own a Cambridge Audio 540A integrated and while it sounded pretty good, it was not in the same class as either the Audio Refinement or the Creek. I would buy one of the latest Rotel integrateds before I would buy another Cambridge. All the ones you're considering and that have been suggested should work fine.