MDR's don't suck. Just the V-Crap series, where the lower end series all sound bloated, and the upper end sound okay, but not at the price they are going for.
Anyhow I do own the KSC75 and I think it sounds fairly balanced for the price, and they are very moddable.
Although, in the end, I prefer my K81DJ with my iPod. It sounds a bit more refined, and makes the KSC75 sound a bit harsh.