Transparent Cable Upgrade?

I own Transparent Music lInk Plus through out the system. I am considering upgrading to the Reference line. Worth the cost? Your experience?

Next, I have Nordost Frey phono cable. The only non Transparent cable. I chose this cable with my VPI classic since the TT manufactures its table with Nordost Vahlia cable. Wondering if I should sell the Frey and look at Transparent to keep the system uniformed. I find Nordost a bit bright.

Finally, perhaps not the forum to post, but considering converting the TT from RCA to Balanced. Worth it?

Thank you