Not sure about "better" but I chose Amtrans AMRG non-magnetic carbon film resistors in my Hattor passive that I use to adjust volume and provide a display and remote control in my system. I have been happy with the sound, and compared to the many other preamps I have owned I don't believe it leaves anything on the table wrt volume control without gain.
Metal or Carbon Resistors - Which is better?
A passive preamp paired with 300B amplifier and TT as main source.
Passive preamp comes with two options,
a) Metal film resistor - 1% accuracy 0.5W type
OR
b) Carbon composition resistor - 5% accuracy 0.5W type
Which one would you choose and why?