What's the best protein bar out there?

I eat protein pre work out-I'm not into gaining huge muscles-just tone and strengthening exercises mostly. I've tried ALLMAX isoflex bars, myo plex, Shapeup bars, Progressive berry bars, protein to go bars...does anyone else have any other good suggestions? at least 20 grams of protein per bar. thanks :)
What's the best protein bar out there?
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