How about eight gay wives?
No, seriously, this is actually a difficult choice. I get the "benefits" if they're straight, but if they're all lesbians, then odds are pretty strong that they'll ignore me and go do their own thing. So they'll be whining and nagging alright, but they'll be doing it to each other, while I drink and play video games or something with no one bothering me.
Honestly, I'm gonna go with the lesbians.