The best, all round, all band, antenna is a high centre-fed dipole of
no particular length, fed with an open-wire feedline of no particular
length or impedance, all the way to the shack, used with a choke-balun
and an unbalanced tuner.

It is good down to the frequency at which the dipole is about
1/3-wavelength long.

Simplicity = efficiency.

Once tried you will never return to anything else.
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Reg.