Disease Control (fung-onil vs Oxidate vs Serenade)

[fastback81]

Hello All,
I'm a newbie so I apologize for any topics that have already been discussed, but I'm dying to know what type of experience everybody has had with different types of fungicide as prevention/control of early blight/septoria/etc...

I'm trying to stay as chemical free as possible but I'm still trying to watch toxicity as well (I don't like using copper).

I've used Fung-Onil (bonide product with chloranthanil), but have been looking into Serenade and Oxidate and want to start treating more organically.

Has anybody used Oxidate and/or Serenade with success either for control or prevention?

Thanks for any insights in advance.

Ron