When it comes down to temprement they're about the same - I'd say a male festae would be the nastiest at full grown adult size - but there's not such a large difference in temprement that it's going to make any difference in the lines of what you can and can't keep in a tank.
Female festae from what I've seen are shy - males are outgoing.
I don't have any experience with the differences in female and male uro's.
Female festae from what I've seen are shy - males are outgoing.
I don't have any experience with the differences in female and male uro's.