 I have a 2008 Altima SE V6 and this is by far the most uncomfortable seats I have ever had. I downsized from a 2007 Infiniti M35 those seats were OK. Before I bought the Altima I had read several posts in Edmunds about uncomfortable seats on long drives and I should have listened better. It only takes 5 minutes and my back starts hurting. I do have back problems but this pain is different. It feels like there is no support in some areas especially left side. I have bought padded lumbar cushions but it did not help much. I would invest in custom seats if it would help but if not I am going take loss and get another car but what car in this class has superior comfort?