Hence - the cartridge first, and well over 1000$ one for sure.
The 103 series can be very critical in Arms when they are not heavy enough, and to be honest, Analog reproduction is a combination from everything. Probably the SME is much more accurate and you simply hear the truth (more than before).
There is a cartridge from Zyx, FS100 - I think -, that has a very remarkable performance for its price. It produces more "music out from the grooves" than others I heard in this price area. And it is a easy going cartridge, no secrets from set up. the Koetsu will compensate the high and low frequency areas, midrange is superior, can be a good match, but sooner or later you will think about it again...