You can distribute the V3-sr1.cr2 so long as you have not injected any morphs into it. (I'd checked this out a while back.) V3 Blank is best if you've created your own injectable morphs and put new morph channels in. If you have a character that will need some of V3's morphs injected in, the V3-sr1 is the better one to use. (This might happen if your character has proprietary morphs that you created and put into the .cr2 file, but you also want people to inject some of the DAZ morphs as well.) I created an AnimeDoll-V3 hybrid - AnimeDoll's head on V3's body - a while back. I put up instructions on how to put the mesh together and was allowed to redistribute the combined .cr2 (both MayaX and DAZ gave permission) which allowed AnimeDoll's head morphs to work and V3's body morphs to be injected. If all you want to do is have a set of DAZ V3 morphs injected in to specific settings, an INJ file would be best. (And the corresponding REM file to yank the morphs and settings out afterwards.) Hope that helps.