Lightwave is sort of a Phoenix. Been around since early '90's & was instrumental for the Sci-Fi upsurge on TV back then, then movies. Still is. Been in limbo for the past several years, but got bought recently & is seeing new development. I haven't updated yet.

FBX is more a packaging format but has become standard.

So for the characters, I use FBX; for things like props I use OBJ. Oddly, I've not figured out how to IMPORT an FBX into Daz.

One of the big pluses with Daz though is that the FBX format can also export character morphs. Still sorting out differences for 8.0 & 8.1.