Sorry, but if you 'auditioned numerous turntables" in less than ten hours, you didn't really "AUDITION" ANY turntables, you just looked at them with a LP playing.
To be able to actually 'listen' you have to be relaxed. WHO can be relaxed with a salesperson hovering over you, or the turntable, or he is talking at you a mile a minute filling your head with stuff you do not know (and don't need in an audition)
You have to GO back,
after making an appointment, and making it clear you want to spend SEVERAL HOURS listening to (pick three). Then, when you get there, listen to WHOLE LP sides. DO NOT LET DUDE TALK! Just listen. Ignore dude, listen. If Dude is jumping around, ask him to get lost. (seriously).
BUY a LP of music YOU LOVE. Actually have at least three different LPs of music YOU know AND love and bring them with you! Listen to all three on one TT at a time. Relax. Listen to all three LPs after a ten minute pause on the second TT. Then repeat on third. Use the same electronics if possible. AND, if you want to compare to CDs, then bring your same CDs, and do the same thing!. no jumping around, changing tracks. Just listen to the whole Cd, then perhaps listen to the same whole LP. AND, again, shoo't' the saleman. Chase him away if he (and HE WILL) starts talking.
If the store is TOO BUSY for this, make an appointment when they are not open, or before they normally open. tell them you want 3 hours to listen.
When I go to my local favorite dealer, first thing I turn it down. I NEVER have been in a store where the music is NOT turned up too loud.
You want listen, not feel the music.
Relax. If the dude is pushing TELL HIM to back off, politely. Relax. The KEY to being able to hear is to not be TRYING to hear a difference. Just enjoy the music. Notice which one you enjoyed the music the most. NOT trying to think was this one more bass, or that one better midrange NO! just how it made you feel about the music overall.
THEN, if you still don't find anything in LP playback, you tried it out, and made a realistic decision.
Good Luck