Personally, i think that if you practice street or extreme natural is best V-brake or maguras. If you practice "standard" natural maybe is best front disk. I had the same question arround my mind a month ago when my magura louise lever blade broke.... Then I though to change to HS33, avid bb7 disk or Hope. My Louise was under waranty and my blade was changed for free, but now i'm quite sure to continue with disk, my level is not extreme and i like a lot natural.