I've got the Cobb springs designed for the stock struts, no problems and a great ride. I personally didn't think it was too much different from the feel of stock. As for durability, no problem there at all either. I have probably 25k miles on 'em now. I've been down the Alcan to California, then over to New Mexico driving Route 66 most of the way and back to Alaska, all of the way had some pretty rough roads and the Cobbs handled it perfect. I would have liked the back to be a bit higher, but I still think it looks great.