I have been running Bradi's for two years now on my 400. I have yet to have one warp. The rears are stock, and I did get those to warp, but did not have the time to shop for Bradi's as I wanted to get ride of the "warble during braking".

I do hit the brakes hard at times, and so far, no warp on the front set. You will feel a slight sensation from the pads crossing over the slots or holes (not sure), but it very slight, and is only noticible under the most extreme braking conditions. These are made from very good "stock "material.

So I give them a thumbs-up after two years of use. It was my understanding that Ferrari uses Bradi as well.

My 2 cents...