Our systems allow you to operate at full capacity with more grain-on-grain threshing, less grain damage, and higher field efficiency. Plus, Our new XPR 2 concaves work for all crops so no more changing out concaves. Now we can\'t tell you exactly what we did, as much as John Deere and Case IH would love it, what we can tell you is that the performance of the XPR 2 is far superior than anything we have tested against.