I have reviewed several clubs etc in the past. I want to start out by saying that I like to use a product several times before I tend to leave a review. I understand most folks review right after they have a good round and usually after the first use. Not such a case here. I purchased this head recently to replace two drivers. A brand new 675T and my old standby 653D. I could not get the 675T setup right and sprayed the ball everywhere. Found it extremely hard to use. The 653D is fantastic, but they aren't making this one anymore so I will continue to keep it as a backup, and that is where it was, back in the bag to replace the 675T that just wouldn't cooperate with me. I read the specs on this head and decided to give it a go. I shafted this with a Fujikuri VistaPro 70, regular flex, 44". I actually need the stiff flex but chose to try the regular instead. Glad I did.....WOW!!! This combination is working for me. I have gotten use to it now and I must say it is a joy to swing smooth and watch the ball fly. Easy to control, easy to work the ball left or right and to keep it in the fairway. I have the right launch angle for my swingspeed (105mph). Now, I will say it gets a bit loose at times but that can be solved by throddling back some or by changing the shaft to a stiff flex. I have played this club now SEVERAL rounds and find it to be a super performing unit and the value on the mark. I am very happy with the head, the workmanship is super, the quality impeccable, and only time will be the factor for durability. Now as for the Viper Blue/Black headcover.....come on guys, you should sell a crowbar with it to get it on and off. In conclusion....This head is a super deal, and will work with just about anyone's swingspeed provided the right shaft combination is in play. I love it so far and it really had to be special for me to replace my 653D. Get yourself one!!! You won't be sorry.