Hah! Saw this post a couple of days ago with the intention of responding when I had some time, but I see that chakster did it for me ;-). Chakster is correct, the XTZ really was a terrific cartridge. I would only add that taking into account that it is impossible to accurately quantify the level of “improvement” from one component to another as it relates to cost, I would say that if one values smoothness and refinement and one’s sound system already satisfies in the dynamics department, then the improvement gained by going to the XTZ stylus from the TLZ stylus is about as much as going to the TLZ from the 8MZ. Personally, after having experienced the improvements in smoothness and tonal refinement of the XTX, I could not go back to the TLZ. Good luck.