In one of my drag cars we ran a factory chrome box, performance curved stock distributor and a Jacobs Ultra Coil. Car ran great. Fired up the first turn of the key, never loaded up the plugs, ran consistent e.t.s
Next season we switched to an MSD Digital 6 set up with a billet distributor and I think they call it the inductive coil. The car ran no faster, ran no cleaner, and didn't mph or e.t. any better. However, after a season of use, the rev limiter began to get flakey and actually cut its limits in half. Imagine my suprise when one day we unload, go to the lanes, and suddenly my once fast car wouldn't rev over 3k.
Swapped that out for a Crane Hi-Fire 6 and E-core coil and again, performance was consistent with no marked improvement or degredation.
What I'm getting at is that with most reputable, high end suppliers, you likely aren't going to find a huge difference in performance so long as you select the right components for the application. So if you running a street car, use a street ignition. If your running nitruous or a blower or are in a race only application, use the right components and you'll be fine. Just don't cross bred things and use massive power racing ignitions in a daily driver and then wonder why your plugs only last 6 months or use a mild street ignition in a high compression engine and wonder why it won't fire consistently.