I have the gen 2. If I were to do it again, I would go with the gen 1.
I bought a sling swivel plate, that fits under the buttpad. When I took the buttpad off, I found that the posts that the buttpad screws go into, both had cracks for the entire length. I contacted Magpul, who replaced it. When I got the replacement, it too, had cracked posts. I ended up I used epoxy to repair and hopefully beef up the posts.
Doing some reading on US Rifle Team forums, found at least one other person that also found cracked posts on their gen 2.