"You don't need a consultant just your own ears"
Personally, I think that you need both.
It will take time for your aural memory to lock-in good, excellent, and just-right!
Listen to LOTS of various systems. Visit shop, shows and friends. I understand it takes time, but it will be a good investment if you find 'just right' speakers.
Everyone seems to agree that in-home demos provide the most assurance.
Balance words with motivation. Most of us have an emotional investment, as well as lots of cash, in HiFi. Others of us have a profit motive. Keep your ears open for all of these motives.
Last of all, be patient!