Attached Link: Metasequoia LE

Another way to play with meta balls is to use Metasequoia. It's a japanese program but it has an english version. And best of all: IT IS FREE! And as far as I remember, it exports obj. At least I know I've made things in Metasequoia and exported them to Lightwave (for touch-ups) and then to Poser. And since you mentioned that you had LW too, it COULD be a possibility. Anyway it's FUN to play with metaballs :o)

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.