According to my understanding, Rega just cloned the Audio Technica cartridge and is selling them three times more expensive with an attractive carbon name. The particular Rega carbon cartridge i have is close to defective, although I was able to correct the position of the right end of the needle, this was at the cost of disbalancing the position of the needle itself towards the platter, it is not now strictly horizontal (i was afraid to force it too mach not to break it).
Goldring can be a better cartridge but I am not sure if there will be a tangible difference for most of my LP s which recording quality is not very good (there are a few really well recorded LP s from more than handed LP s i have currently; even jazz sounds better on CD s in my system - i did a careful comparison of a few of them, just recent comparison i did on the modern jazz quarter blues on Bach). For me, in digital, DAC/CD player is important but more definitive is the recording quality itself. You spend thousands of dollars on a better DAC/transport and you get less improvement than between two well and not so well recorded CD s. I guess something similar happens with TT cartridges.