Which version of GenX2 do I need?

I'm confused. I have GenX which I use in Studio 4.7 to transfer morphs from V4 and M4 to Genesis. I know I need to move up to Genesis 2 Female and Male. But I'm confused as to which GenX product I need to accomplish this.
Do I need this:
http://www.daz3d.com/genesis-generation-x2
or this:
http://www.daz3d.com/genx2-addon-for-genesis-2
Or both?
The product descriptions only confuse me even more.
Thanks,
David H.
Comments
Both. Gen X2 is the new version of the Gen X plugin. The Gen X2 Addon is the extension that allows the plugin to transfer morphs to and from the Genesis 2 models.
Thanks. I got kind of lost in all the techno mumbo jumbo that was listed in the product descriptions.
Just glad I could help.