IKR...that's why I have 8 headphones:
Panasonic HTF600 - Good
CAL! - AMAZING
JVC HA-S500 - bad, even with mods / EQing. Not capable of detail.
Marley EM-JH020-MI - Terrible...until you mod / EQ them, to hell. Then Very Good / Amazing
NVX XPT100 - UNFRIGGINBELIEVABLE
Koss KSC75 - Good for the price
NXG NX-HTDJ - Very Good
Koss KTXPRO1 - Good for the price (better than KSC75, terrible compared to NX-HTDJ)
Nothing compared to Joker though. :P
Most people love the HA-S500, including me. They are just as good as Takstar Pro 80/Gemini HSR-1000. Did you burn them in enough? The Carbon Nanotubes require serious burn-in because they are very stiff.
Do you like CAL better or XPT100?