Im glad that you like the clucth, they are overbuild and will serve you a long time. Just remember that new clutch need some break in time and after will feel even better and have more smooth engagement.
This new models springs are more power, weakest model, light blue in color and similiar to factory ones but about 30% stronger so decent upgrade over them.
And this models shoes what you use now have upgraded friction materials as well, not easy to tell by look but is different than first model ones when they come out in Eu. It look similiar and receipt are very similiar but new material is more soft, it provide more constant perfomance and will not become hard and glazed from high heat and friction like we often see on factory shoes.
This are samples of both materials: