To me tire plugs are just to get you by, not a forever fix. They always seem to leak after some time.
A inner radial patch is alot better, I have to do tons of flat repairs at work and rarely do they leak again.
I'm just getting them by for a while they are less than 50% so they are getting old anyway
I've never had a tire plug leak.
horned tweeters, lol. In your car? do they fire into your nutz?