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Gonna drop this here on page 9 as a Recap and ain't nobody got time to re-read all this.

The OP asks about "Best Performance"

Now that depends on what your definition of {performance} is. What operational parameter is most important to your preferred style of operating?

Is Local Talking most important to you? If so, then you want Highest Gain. Here your true 5/8wave will direct the most signal towards the horizon. You'll get the biggest signals out to the furthest distances. All other considerations like cost and physical installation for the greater length being okay with you, the only "drawback" to a 5/8 is less overall bandwidth with no swr. You get more bandwidth going down to a 1/2 wave and get the most bandwidth out of a 1/4 wave.

The greater bandwidth at No SWR may be important if you like to operate all over the band up and down and perhaps are running an SWR-Sensitive amplifier where it is important to have little to no swr and you don't want to run an SWR-Corrective Antenna Tuner.

Pretty much all verticals can be tuned/adjusted for Resonance and little to no SWR as long as there's nothing wrong with the antenna or your feedline.