unpopular opinion: neither set of sound effects is very good for GNB. The old ones are very tinny and empty, a blade that thick and heavy wouldn't have that metallic ring to it, it should be much lower pitched if it exists at all, and the newer ones with the THWACK sound less empty but are awful in their own way, especially that stock punch sound effect.

They had the gunblade sound effects perfect back in 1999... there's no reason they can't get this right 23 years later.