Did you compare you old Supex to something else ?
I'm sure any original SoundSmith cartridge with his Ruby cantilever is better than old Supex and rebuild of his own cartridges are much cheaper that rebuild of the old ones.
However, a cartridge with user replaceable stylus is even better, compared Supex MC to Garrott MM the difference was huge in favor of Garrott. Sadly Garrott Brothers are no longer with us (those are legendary re-tippers and cartridge designers), but Philippe Luder is the man behind their company now.
Another great alternative to Supex is Shelter MC model 5000.
I'm sure any original SoundSmith cartridge with his Ruby cantilever is better than old Supex and rebuild of his own cartridges are much cheaper that rebuild of the old ones.
However, a cartridge with user replaceable stylus is even better, compared Supex MC to Garrott MM the difference was huge in favor of Garrott. Sadly Garrott Brothers are no longer with us (those are legendary re-tippers and cartridge designers), but Philippe Luder is the man behind their company now.
Another great alternative to Supex is Shelter MC model 5000.