Looking at how many happy naim owners like myself, now use morgana cables and phantom speaker cables, its safe to say that these have gone down well.
The mono XLR to din, used to connect between 300/500 amps, has certainly gone down well, and removing the standard naim cable, that looks like normal mains cable, you might find on a hairdryer etc, certainly gets rid off the massive bottle neck this brings and lifts the system sound massively.
Also the interconnects beats the naim highline, not only for sound quality, but also build quality.
The price you can always argue over, but when you look at these and compare to others, these are a bargin. If you have a naim system, then i would give them ago 100%, plus they offer a 30 day money back, if you dont get on with them.
I am even on my 2nd full loom of morgana, after selling my 1st lot as i was going to move my 500 kit on.