Yeah, SWD2+ is slightly on the bright side but it doesn't bother me, and I am sensitive to that. TM9 is anything but bright. The highs sound a bit "woolly". It is smooth and laid back, but a bit too smooth and laid back for some. I think I remember there was some criticism when it came out because of the lacking highs so Blox re-tuned it and came out with a new version with another name. Was it Blox Yin? For me TM9 works best with more laid back music. With metal or similar music, it's just not punchy enough.
In a way SWD2+ and Blox TM9 are opposites with SWD2+ focusing on upper mids and highs, with good bass included, and TM9 more being about mids. Not as deep bass and more of a mid bass bump on TM9.
CampFred 2 is a great earbud that works with all types of music. It is quite musical and you just groove with the music, while it still has got good detail and bass. ZoomFred is more "raw" sounding. Bass is VERY deep for a pair of earbuds. ZoomFred has got a more "in your face" presentation of the music than the more musical sounding CampFred 2.
ZoomFred has got similarities to my pair of Red Dragon. Remember that the few Red Dragons that have been made have all been custom tuned, so there is no "Red Dragon sound signature", my pair is tuned toward Sennheiser HD800S. I think a pair made for a guy in South Korea was tuned toward Focal Utopia, if I remember correctly. Haven't heard Focal Utopia, though. Only heard Sennheiser HD800S shortly in a store in Japan a few years ago. In the future I might bring my Red Dragon to Japan and compare it directly.
Hope this damn corona goes away soon...
Perhaps you can call ZoomFred a "mini Red Dragon", but it's much rawer sounding with a bigger bass slam. Bass is more controlled and textured on Red Dragon. The soundstage is wider and deeper with better detail, instrument layering and separation. But ZoomFred is really good, and I heard that ZoomFred Pro is better, and also uses less stiff cable than the regular ZoomFred.