Kurt is one of my acquaintances in Audiogon. Yes, I upgraded to the Goldfinger v2. I don't have any experience with the Koetsu cartridge.
The XV-1s is an excellent all around cartridge from top to bottom. Excellent tracking, rich tonality, low noise, big soundstage, and good extension on both ends. However,in terms of resolution, soundstage, and noise floor, the Goldfinger v2 is in different league. Since the topic here doesn't include the Goldfinger, I am not going to talk about it in detail.
That said, I agree all high end cartridges are good performers. Hard to go wrong with any of the above you mentioned.
The XV-1s is an excellent all around cartridge from top to bottom. Excellent tracking, rich tonality, low noise, big soundstage, and good extension on both ends. However,in terms of resolution, soundstage, and noise floor, the Goldfinger v2 is in different league. Since the topic here doesn't include the Goldfinger, I am not going to talk about it in detail.
That said, I agree all high end cartridges are good performers. Hard to go wrong with any of the above you mentioned.