As pip says, it's a trade-off or compromise between ride comfort and road holding, but all the different models seem okay from what people say. My 2014 AMG-line (the lowest apart from the AMG45) is obviously not going to be as soft as the new models, but even with my fragile back, I don't have any issues on the rough tracks I use every day. On the other hand, only this morning I passed two long lorries and a car on a rare straight stretch of road on an otherwise twisty route. I spun the turbo up and floored it past the traffic, taking the last lorry around the (sighted) bend at the end of the straight. I was flying as I hoiked the wheel round the lorry, round the bend, and fully expected to drift out, as I would have in my previous C-Class. But the GLA's 4WD stuck to the tarmac like it was on rails, and the chassis was nice and level. At times like that I'm glad I've got a lowered suspension, but I'm sure any GLA would have made it round safely. As pip says: the higher the springs, the softer the ride but the more walloey it is.