Amethyst versus Nagaoka MP-150/MP-200

@three-paws There are definitely times when I hear warmth, especially when playing jazz trios, jazz ensemble, beat mix tracks, DJ or electronic lounge beats. This is again the intention of those tracks, hence I used the term: “pure.” On the contrary, I wouldn’t put a Stravinsky symphony or Dua Lipa in the same “warm” category simply because of the varying genre. I value hearing sound as it was recorded - “as if you’re there” - which many of us appreciate. 
In visualizing your system I think you built a robust system deserving of different cartridges. But if you really want to sell there are outlets that will buy quickly. Good luck and happy listening! 

If that's how you're defining pure, I'm a bit confused, as I don't think the Amethyst replicates the original tonality with some magical accuracy.  I think it gives them a warmth that isn't inherently there.  That's actually why I like it so much.

Btw, I'm not sure what in my post has given folks the impression that this is my first cart, etc. I have several TTs, amps, speaker pairs, etc. I am just asking about these two specific cartridges, not for advice on how to shop, how to build a system, etc.

@three_paws 

noromance , do you find the AT bright/fatiguing at all?

Nope. I have the 750 on a 401. However, give it about 20 hours. It's not in the same league as my Deccas but it is fine with good frequency response and detail. 

Just a note here. A detailed cartridge is not bright or fatiguing. That is a system issue. Shying away from them is covering up another problem.

@noromance , sure, but I never said all detail is inherently bright.  High frequency detail, or excess of it, certainly can be, especially when the cart lacks tonal balance.  That's not a system issue.