A few thoughts:
1. The Luxman EQ-500 phono preamp is a great sounding piece of equipment.
2. Rega tonearms are not a great match with low compliance MC cartridges, and the lack of easy VTA adjustment makes it difficult to optimize the VTA, which is crucial to getting the best from your cartridge. I agree with @dover and would recommend upgrading your turntable to something better and more suitable before buying an expensive cartridge.
3. Add EMT cartridges to your trial list.
I think you have a nice system. Your analog front end will only be as good as the weak link.
1. The Luxman EQ-500 phono preamp is a great sounding piece of equipment.
2. Rega tonearms are not a great match with low compliance MC cartridges, and the lack of easy VTA adjustment makes it difficult to optimize the VTA, which is crucial to getting the best from your cartridge. I agree with @dover and would recommend upgrading your turntable to something better and more suitable before buying an expensive cartridge.
3. Add EMT cartridges to your trial list.
I think you have a nice system. Your analog front end will only be as good as the weak link.