I have Project X 5.5 steel shafts in my irons and a 910D3 driver with the Project X 6.0...I hit both my driver and my irons pretty well.  I'm thinking of adding a 910F 3 wood and one or two 910H hybrids and am thinking it would make sense to get them with Project X shafts in them but am not sure whether to get 5.5's or 6.0's...will they play more like my driver or more likr my irons?  Any thoughts or suggestions would be welcome.