The BLX Six-One Tour 90 is the current racquet of choice for Roger Federer.  It is a traditional style racquet that is loaded with feel and control.  This racquet will appeal to the stronger player with long smooth strokes that can generate their own power. The BLX technology is evident in this upgrade from the K Factor version and it produces a slightly more muted feel.  The 16x19 string pattern provides ample spin and power from the string bed, while also allowing an incredibly soft feel on touch shots.  If you are a baseline basher and are more comfortable grinding it out from the back of the court, then this probably isn't the racquet for you but anyone looking for more precision and control and play an all court game, then this is definitely worth a demo.