I picked these up after reading a ton of reviews and comparing a few options for a different, but still brutal sound. These win - period! I've been playing the 81/85 combo for years, but wanted something different...loved the sound of the 60 in the neck, but really didn't like the 85....came across the 57/66 set by accident. They've since replaced my primary pickups. The 57 is MEAN...very mean - I love the response to, as it almost feels like a percussive response?! Not quite sure how to describe it - it sounds really saturated, also - but I can get an 81 sound by rolling off the volume a bit. Really cuts through with the chugga-chugga Awesome! The 66 is amazing also, very bluesy feeling, warm and rounded. Cuts right through - Cleans are UNREAL! Between this set and 81/85, I'll go with this all day long. I run through a 6505MH and the combination is deadly! I play symphonic death metal, also, but this set will probably do everything! Seriously, try 'em...and Sam Ash, get 'em in gold! Finally happy with my sound after years of tone chasing!