Best show pig breeders and why?

My son and myself have gotten into show pigs the last two years through his 4H club . But would like to start showing. I'm still unclear if adults can show pigs or not? Haven't been able to find much information on that . But if they can is there a list of shows somewhere ? Sorry if I'm asking old q...

We used Honor Show Chow last year with amazing results . I'm curious what other people like and why and what feeding programs have worked best for you