Give me butt sex, or give me death. Is what I think some statesman said once, if I'm not mistaken. I agree with that man, with only the proviso - no butt sex unto death. I mean, c'mon. Some moderation.
One dick to a hole, as Whatever Itself arranged, forever and ever amen.
And two dicks is generally what's comfortable to watch in a woman, going at once. I've never seen a girl stuffed with 3, where everybody looks like a sustainable fuck pose, in real life fuck scenarios. So yes, I know, that leaves the issue of a vacant hole. Toys, asshole!
Shit, even if you're going to get her hands going, each with a dick, you can only ever have her satisfying 4, if you want to reproduce it. Unless she's got dexterous feet. But I'm not a feet guy, anyway.