Haha, I always end up splitting the couples as I can't stand half of each.
I just can't do that. I have in the past, but it makes me itch, so I always take both or neither now. Though I don't rush to the temple if the one I don't like of each pair happens to fall in battle.
My preferred party wouldn't include any of the "canon" companions, though I don't mind most of them. In fact, my dream team of the non-EE companions would probably be Xan, Tiax, Skie, Eldoth and Viconia (or maybe Faldorn), though I don't think I've ever played with them as a party together as I like playing casters and/or thieves myself. But perhaps it's a group that would be complemented perfectly by a beserker fighter (copyright Warlocke) ... maybe the playthrough after this next one!
"You may call it 'nonsense' if you like, but I've heard nonsense, compared with which that would be as sensible as a dictionary!"