Topband: Two 2:1 transformers to choose from!!

[James Rodenkirch <rodenkirch_llc@msn.com>]

I have two impedance transformers wound on BN 73-202 cores that I can use for 
the 2:1 impedance transformer I need for my FO0AAA delta receiving antenna.  
 
One has a  2 turn and 3 turn winding- giving a 4:9 impedance ratio.  The other 
has a 7 turn and 5 turn winding, giving a 25:49 impedance ratio.  I don't know 
which would be better - I believe the one with more
 turns probably has better coupling, but more loss?!?!
 
I am splitting fine hairs here but....I am curious if one might say, 'Use "x" 
instead of "y," Jim....Thoughts???
 
72, Jim Rodenkirch K9JWV
                                          
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Topband Reflector