like most subjective stuff, you'll never know what you prefer until you sample the stuff yerself. the rest is just opinions of others, and those opinions are just that - what other folks like.
imo, the most popular woodies used these dayze are, in no particular order - poc, doug fir, and sitka spruce.
so, here's my subjective opinion ...
surewood doug fir for good mass weight, straightness and durability.
hildebrand sitka spruce for much lighter mass weight, straightness and durability.
poc only when the above two can't be found.
build a woodie for both a spine and gpp to match yer bow(s) - don't be concerned about foc.