I've attempted Fantasy Figures, Exnem's original, and Robert's of both genders. Putting the files to their right folders, and activating any mods that come with them, never works: all I get is the standard vanilla underwear version.
Now, creating an OMOD does work fine, and I've used it to put up Robert's Male Bodies and Exnem's original for females (I used Fantasy Figures at first until I noticed that it was doing pretty bad for some races and genders), and played happily for a while until I found some additional mods that I would've liked to add in: there's the bouncy breast option that seems kind of complicated I'm looking into, as well as the simpler looking Fox's Argonian Textures for Exnems.
Unfortunately, the above problem persists. The textures look for the Exnem body files, but for some reason only find the originals and try to use them - which only ends up a mighty unappealing mess. Turning them into another OMOD does not work either.
It's like Oblivion had another place it was pulling its body textures from, that overrides everything I try to put in the "normal" folders, and requires something as heavy as an OMOD to get around - and even then it only works sometimes. Any way to fix this kind of an issue?