"I've never head a bad Takstar headphone yet."
I've got some dj rebrand of ts-600 (or 610) for 30$, and it is not really good,
actually it is very, very dark (what is funny it is simultanously not muddy, and is not bass bloated, however the bass guitars are heard more than neccessary, yet still there is no low strong-impact bass), and for example in metal everything (guitars, bass, drums, vocals) blends in into one mess.
and on the other hand is has some strong bumps in higher mids, so for example tom toms/kicks have this very aggresive edge to them (the sound which they produce which is not bass is very noticable), and some sounds (like higher notes on the piano) do something like resonation, and this headphone is on the edge of producing siblants.
But the year of production is something like 2006 (or 2007), so actually takstar made a greate progress with its headphones