I've used Magnecor purely for performance and longetivity...I had a neighbor who owned a NASCAR vehicle and recommended Magnecor wires based on his experience. So, I bought them (years ago) and never changed them -- they are apparently very long-life products. I didn't have ignition noise before, and I don't have any now, so I can't say I noted any change.
Before investing hundreds of dollars in wiring (unless your wires need replacement, anyway) you might try the usual & standard remedies of bonding the hood to the frame and block using wide, heavy copper strapping, etc. I found in my Volvo that although the car was factory-equipped with a single, fairly large braided cable from the hood to the frame near the firewall, that apparently was inadequate; when I added a much heavier, wide copper strap to the other side of the hood (and grounded to the frame nearby) -- after a lot of scraping and wire brushing to expose metal under what was seemingly several layers of paint! -- the ignition noise I originally had when the vehicle was new completely disappeared. The cost of this exercise was probably $5, but an hour or two of labor!
I installed the Magnecor wire set two years later and did not note any difference in noise (but, again, the hood bonding done years earlier seemed to take care of that). But I could "feel" the extra power provided by the super wiring (yeah, right). Only kidding about that...when one spends $120 on ignition wires, he definitely wants to feel something, other than a lighter wallet, hi.
73 & good luck!