I have Booters from last year, and I love them. But, I found them just a tad too soft, especially when going at speed etc... so, anyway I ordered some stiffer tounges - 4's, to replace the existing 2's (Plus i note that this years booters come with 4's). I'm 5'11 and probably 185, so just want a bit more resistance in my tounge when buttering etc - i.e. less flex, and more force transmitted to the ski....
People who have done this... how did you get on? any tips..... was 4 stiff enough? Did the performance of the boot change dramatically etc (better / worse)?