I owned one. I thought it was a great club. I hit the ball really good. I have the 905 T now and will probably get the D1. No reason for me to change so often other than I'm just another run of the mill club addict.
The K is a great club. I still have a 975 JVS I take out every now and then when I know I'm going to be needing driver off the deck. Just as long as my HiBore
My girlfriend uses this driver and so do I when we play because I prefer this driver myself. It is forgiving (to me) and I hit the ball a lot straighter and further than my current driver.