I remember Hans posting about back problems in the lounge so he might like the Aurora seats a bit more. They have some more back support in the lower back and seem to contour better. We've taken the bonnevilles and the Aurora on long road trips in the past (my mom, brother, and myself) and all three of us agreed that after a several hour drive without stopping our backs hurt more when getting out of the Bonne, especially our lower backs. But the 92-99 Bonneville seats.... I'd take those anyday over either the 2000+ Bonne or Aurora seats.