Dying Fetus seems to be hit or miss in my experience. Some tracks are really awesome, very tight, other ones the drumming is somewhat off time and overall sound is kinda shit.
Dying Fetus' best album is their debut Infatuation with Malevolence IMO. Destroy the Opposition and Killing on Adrenaline are great too, but I personally didn't like their newest War of Attrition at all.