Thank you everyone again for your help.
I feel i need to clarify further my approach. I have not always been a music lover so much as i am into the reproduction of music. The journey towards producing music realism is my first priority. When i get there, i would start putting together my music collection. Of course, the streaming site such as Tidal/Qobuz making music collection a lot less meaning less now.
So i am not a guy who constantly trade his gears. I rather than moving up the ladder by upgrading my components for significant delta. So i have setup a basic system and now have completed upgrade large part of it to SOTA.
My room is treated. I have SOTA in grounding(Empress, Elite, ground cables), SOTA in power(custom isolation transformer, Power Conditioner), almost SOTA DAC(Chord Blu2/Dave) which i felt would need more than double or triple the money to beat, an great speaker which gives me the tonal and speed i like. I am upgrading all my cables to Kuro, Furutech DPS-4, possibly Skogrand/Siltech/Masterbuilt for future, i had 8 ultra 5 and intended to move them under Empress/Elite once i acquire Stacore and/or Taiko Tana. I will shortly acquire for THEONE music server as i use digital only. Scherzinger devices is deem necessary too.
My path for all other parts of the system has always been cleared and necessary. However, when it comes to electronics, maybe SuperDave and Mike and others with end game pre amp + amp combo would clarify on the benefit over yours other tweaks like grounding, active vibration, etc.
Of course i understand the general idea is to build a system with solid fundamental (end game speaker, end game pre+amp, end game DAC) before all the tweaks. But i felt this approach is not giving the most benefit going digital only path.
As for question why dont you go SET route, i am in also in camp that SETs cant deliver when it comes to big orchestra music unless it is something with serious power (Aries Cerat, Zanden) which might cause heating trouble for my small room. I rather stick to SS as i do listen to a lot of big orchestra work which gives me the ultimate feeling of music realism.
It seems Dartzeel is the overwhelming favourite here. I would love to hear any Boulder or FM or Gryphon owner to share more.