I have a Luminor Marina PVD similar Panerai to the watch on this thread and BBK. If I had to give up either of them it would be the watch and I could buy several BBKs with it. People keep saying that you'll only enjoy the BBK if you track and for the most part that is true. But I have experienced brake fade during canyon drives with the OEMs. Not to mention BBK tones down the amplification on the brakes a bit which is preferable for me.
Also a word of warning if you do get the PVD Panerai. Be careful not to scratch it, there's no way to fix it if you do except polishing it and turning it into a stainless model.