If your hollowgram gives you the energy/bass,ect that you desire... than you might have to compromise a little for smaller.8 awg to ?.Some dispute this but there your ears/system.I went with zavfino primas...9 awg not much smaller but i do have standmounts and 200 watt aside amp.It works for my needs.
Hollowgram is a great cable and had them in my system for 18 + years... kind of always been the bar i measure other wire for low end...😉