stranded coil wire size AWG18 or AWG20.. which is better?

[MrRonsen]

hello,

i would like to build a 4+1 stranded coil
which coil wire size would be better?
AWG18 or AWG20 ??
any deep insights why/why not...?

(4 strands) 18AWG
(1 strand) 20AWG
Spool + R60 core

(7 strands) 18AWG
(1 strand) 20AWG
Spool + R60 core

(4 strands) 20AWG
(1 strand) 23AWG
Spool + R60 core

(7 strands) 20AWG
(1 strand) 23AWG
Spool + R60 core

Coils and Coil Components

[Tom C]

build the 20-23 wire..... 7+1 ..... easy to tune and verify.

Tom C