FFA because maps are layers of rng on top of rng, and the last time I ran with a group that was map owner need... one person lucked out and won millions of gil in (multiple) minions and crafted pieces, while me and my friend got close to nothing valuable or wanted at all for our maps. I wasn't even claiming need on half my own stuff either because everyone in the group is contributing to every map.

Imo, as long as you bring one map to the party, you should be able to roll on everything. Exceptions being if there's one thing somebody really wants, then we'll throw that out ahead of time and help each other out usually. It's why I just run with friends, really.