I'm definitely a Killoren fan.
Wilden just isn't unique enough. I'd be as though we were calling Goliaths "Stonelings", Orcs "Monstroids", and Dragonborn "Dragonborn"
Wood Wose, while it draws upon folkloric roots (pun intended), just sounds too "monster manual" for a player race. Besides, I connect the term specifically with elderly male tree-people (indeed, wose means "wise man"). Having young female wood woses is as wierd as having old male nymphs.
Killoren, is to the best of my knowledge a made-up name, but to me it sounds like something lifted from a book of Irish fey. Name seems right for a PC race, and no gender or age connotations.