I liked the malossi verieater over the polini for over 50 range,the polini was more preciise to 50 than kinda fell off.I'm running the dr pulley hit clutch and bell right now big improvement over stock and has lots of tuneing potential,don't know how it compares to others(I like it so far)I don't think it came with a contra,the white spring seems to be best so far with it,then the long belt for more top.Sip has the best deals that i can find.