How much difference do lower mass cartridge clips make in playback?

Some direct questions can distract from even more important
questions. I mean the problem of tonerarms with fast headshells.
Those are probably made for masochist. By each cart change,
not to speak about broken clips, one will ask himself : my God
why deed I not buy an arm with removable headshell? Well my
consolation is that one need only 4 of those Clearaudio clips.

Hi,
regarding only material i would go with gold, silver or rhodium plated as they do not corrode over time compared to brass or copper. Soldering strength and construction is a different issue as is wire purity.

I could imagine that the less flexible, stiffer headshell wires may vibrate more than Litz types. Likewise, slightly loose clips may resonate causing distortion. I’d like to try a single strand of pure silver wire wrapped in silk. Better construction -even if slighty heavier- should give you a better result.

Gold and silver are to soft for clips. That is why the most are made
from gold -or silver plated bronze. Clearaudio's are machined from
Rhodium and than gold-platted. All headshell wire are isolated 
so hardly resonate. 

Copper clips are unlikely to be pure copper. Also especially silver clips are very unlikely to be pure silver, because both of these metals would be a poor choice for maintaining a tight grip on the cartridge pins. Most cartridge clips are problematic, but their weight or mass makes such a trivial difference that I have never even thought about this as a problem. Why do you bring it up?