@warbles If you don't like the T2 or the T2 Pros, you won't like the T3 and likely the T4. No big deal, you probably just don't like a more neutral, brighter signature. I would guess that you like to listen to bassier genres (such as EDM, hip-rop, rap, etc.) based on that.
In which case, the MoonDrop Starfield would be the better choice. When I say the Starfield is vastly superior, I mean that it does better than the Singer in every way, some more than others. The Singer has significant issues with tuning while the Starfield does not. The resolution of the Starfield is much much better than the Singer. The soundstage and imaging are quite a bit better.
As for the Shuoer Tape, I'm getting around to reviewing them but in the brief 5 mins I found them alright. They made vocals sound pretty thin and the overall sound was very in-your-face. I'll need to listen more but I'm seeing the hype over it.