I generally prefer to use:

-American (themed) planes
-British planes
-French planes
-German planes
-No special preference

For the sake of this poll, this is NOT type specific. ie. if you say "French" it's Newport 17 AND Spad 13. German equals SSDI AND Fok DVII. If your preference is Sop Triplane AND Fok DVII then the answer equals "no special preference".