Hi
@BadReligionPunk , i just received my Semkarch CNT1 today and I'm still burning it in and doing tests, but I'm impressed with it.
From initial impressions, I would say keep the CNT1 as the TFZ No. 3 and Nine Tails are sidegrades with marginal improvements in terms of sound quality. Actually this is not surprising as the CNT1 was original retailing at close to 100 USD, which is where these are other 2 are currently retailing too.
From briefly comparing No. 3 to CNT 1 (I'm using predominantly black filters on CNT1 with stock tips):
Bass is still better in quality and quantity on the No. 3.
Clarity, details, instrument separation are on par IMHO.
The soundstage is wider on No. 3.
CNT 1 has more recessed mids than No. 3. No. 3 has brighter treble.
Toneking Ninetails vs CNT1:
Timbre slightly better on ninetails, and of course ninetails can be tuned with filters.
Soundstage wider on Ninetails. Ninetails slightly better in clarity, details, instrument separation.
Mids about equally recessed on both. CNT1 has brighter treble.
The CNT1 is a superb recommendation from you!
If i had gotten it earlier, I would have skipped the No. 3.
The Nine Tails I would still keep due to their customizable tuning filters and organic timbre.
I think if u wanna get a more significant upgrade (for single DD IEMs) on the CNT1, it might have to be something at the price range of the Tanchjim oxygen, KXXS or the upcoming Drop JVC HA FDX01.