Re: ok i need some new pickups for my strat...
The HR bridge will easily over power the VR middle. I'd suggest either CRn, CRn, HRb if you want the Hot Rails or CRn, VRb, CRb if you want the Vintage Rails.
The Cool Rails clean up very well and the CRn in a strat neck is a killer lead pickup and equally good for clean rhythm work. Clear, not too bright, and warmer than a typical single coil strat pickup.
Since you play a lot of metal (high gain), I'd definatly opt for a rail or a SC sized humbucker like the JBjr. What kind of amp are you playing through? That'll ultimatly decide how heavy you can go, regardless of what pickups are in your axe.