The Shimano Nasci is a new and improved version of the Navi. Improvements have been made to the wrapping system (cross gear) making a more smoother and cast free system. It is a compact reel offering quality which can be used for trout along with small game ocean type fishing. The body is hybrid aluminum offering superior strength. The spool has a three dimensional curve rotor and the power roller makes line trouble non existent. Some key features are the super stopper II, oil injection, SBL which banishes rotary blurring and a comfortable one touch handle. Overall this little reel will give you quality without hurting the wallet.