im not an expert on pickups but ill try to help some. my guess is the guitar you have now has single coil pickups in it. and thats why they buzz (i could be wrong about the pickups you do have though).

if you looking for a new guitar and not sure what you need to know about pickups, here all you need to know. DO THEY SOUND GOOD FOR THE STYLE I PLAY. you can forget about all the flashy names or the cutting edge brands and everything else. forget about active pickups vs. passive, forget about everything execpt do i like the way these sound. if you play a low tuned around c or drop c then play the guitar you plan to buy in c. play it clean, distorted,through a commpresser, or phaser, or delay, echo, play it how you play then remember;
DO THEY SOUND GOOD FOR THE STYLE I PLAY.

thats the only way to tell if you going to like a pickup