Cable thoughts

Looking for Opinions. I'm using a pair of NBS Monitor IV XLR that date back to early 2k's. Bought them used way back when. I'm considering purchasing a set of Transparent Audio Ultra XLR with original mm1 technology, not mm2 or recent gereration 5. The price is pretty good BUT I don't want to go equal, slightly better or backwards. Just looking for some thoughts. I know at one time these were nice sounding cables but not sure how compared to today's technology. I also am using a pair of TA Super xlrs mm2 from my Ayre Codex DAC to Proceed AVP 2+6. Most of my gear is old but I love it and it still sounds great. Looking to economically upgrade thus I'm financially incapable of buying the latest greatest.