I would agree with Geoffrey's comments, overall. For myself, I tend to like warm hardwoods, like cherry. That may be because I also like the woodlands flute sound, I don't know.
I can say that I have overall, great flutes in many different woods, but that I tend to like hardwoods, until I get into keys below low C, and even then, I am open to experimenting with hardwoods, as I have a great contra bass F# in juniper, which while not a very soft wood, is a harder wood than some makers might use for a contra bass (if they even make a contra bass.)
Still, I have an outstanding eastern red cedar A, which is basically at the upper end of the mid range.
Every maker does things a little differently than other makers, so you must seek out the makers flutes you relate to, and get your flutes from those makers. That will vary, from person to person, and what they look for in a flute.
I do think it is easier to play flutes in the low ranges, from makers who use woodlands (flue in the body, as opposed to flue in the block) construction, although that isn't an iron clad factor either. It is simply a generality that is often true, as it seems the finger spread between holes is more manageable in that style of flute design. Either that, or some makers just have figured out how to modify hole placement....I am not entirely sure, since I am not a maker.
For instance, Geoffrey's flutes (I only have 2, at the moment, a low B drone, and a low C duet drone), seem to be especially easy to reach and play, in low (also read as LARGE), flutes.
Pat Haran's contrabass flutes are not much harder for me, than a low C is, to play, so of course, I love the one I have.
My favorite phrase, though about acquiring flutes, is:
So many good flute makers, so little MONEY!