XLR Interconnects

Been using the same pair of old AudioQuest rubber-encased XLR cables between pre and power amps since the late 1980s with good results -- compared to nothing. Components have come and gone, but the AQs have remained the one constant. Then Morrow's recent Reopening Sale discounts gave me an excuse to experiment with a more contemporary design. Just made the switch and I know the Morrow burn-in can be prolonged. Plan to set FM tuner overnights to "white noise" rather than BBC human voice signal to speed the process.

Question: to what degree do you believe balanced interconnect designs have improved over the past 30-40 years? And, price range being the same (adjusted for inflation), would you expect the current lean, lightweight Morrows to outperform the old, heavy-duty AudioQuest design? Morrow says they will, but what do you cable experts out there (please state whether you are or aren't bosom buddies with Mike) think about it?