Personally, I am happy with my 2SS 1LE. I think ZL1 is way too overkill on the streets and you can't open it up at all, but the extra power will definitely come in handy on the track or a highway in the middle of nowhere.
Now that the weather is nice, I hang out with a buddy with a Hellcat Charger a lot. He says that he doesn't drive it very hard but I would have to really give my SS 1LE gas sometimes to keep up. With a ZL1, I would imagine I could easily keep up with him.
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Current:
2019 Chevrolet Camaro 2SS 1LE M6 Shock
GM Performance Intake and that's it, because driver mods before car mods
Past:
2009 Mazda RX-8 GT M6 Velocity Red Mica (Sold)
2015 Chevrolet Corvette Z51 2LT M7 Velocity Yellow Tintcoat (Flood totaled)