ok im geting a super distortion and a humbucker from hell by dimarzio

whats a good single coil for the middle position

i play basically everything but mostly metal and my amp is a line 6 spider 3 120w
I'm sorry but you need a new amp before you change your pickups dude... The majority of your tone comes from your amp - changing your pickups will only slightly change your tone since you are using an SS amp.