This is such a great chronograph guys. Breitling spent many years and millions of dollars to develop their B01 in-house movement and in a very intelligent partnership they allowed Tudor to put the movement in this watch. The prices of these have come down from 4500 preowned to 4000 so that they are a really amazing deal now. This watch is worth every dollar of 4k and they are at price now where I do not expect them to go any lower. So this is a good time to buy.
Check out this review from the one and only Watchfinder & Co.