I went in to PXG to get fitted for the GEN5 0811 XF Driver and walked away with a fitting for a GEN4 0811 XF Driver. Five rounds later I can say that this was the best club fitting I have had yet. I love the Driver and my confidence level with my driving has never been higher. Arccos results show 10 to 20 yards more distance and more fairway accuracy than the PXG 0211 Driver I had previously.