The first-person viewpoint is more enjoyable to write, because it lets me meander more freely, and it can reveal more of the character's self-delusions. Really all the advantages are with first-person, so I'm sorry I don't get to pick and choose.
Anne TylerShe saw herself riding in the passenger seat, Sam behind the wheel. Like two of those little peg people in a toy car. Husband peg, wife peg, side by side. Facing the road and not looking at each other; for why would they need to, really, having gone beyond the visible surface long ago. No hope of admiring gazes anymore, no chance of unremitting adoration. Nothing left to show but their plain, true, homely, interior selves, which were actually much richer anyhow.
Anne Tyler