I just got a 2001 GT Eclipse and I thinking about putting better spark plugs and wires

What are the advantages of a top of the line performance spark plugs over the local autozone spark plugs

do they make the engine run better a little more Horse Power?

What kind of Spark plugs would u guys reccomend? and brake pads

 

Also my car makes a wierd sound (01 GT) when its in neutral and I let go of the clutch any ideas anybody?

 

spark plugs are going to do much of anything, run the stock ones