I'm about to buy my new books for JLPT N1, but I can't decide between Kanzen Master and Nihongo Sou Matome. I used Nihongo Sou Matome for the N2 and I liked it very much. It's really great. But as far as I searched on the internet every site recommended the Kanzen Master series for the N1. So what do you guys think, which is better? Their price it's almost the same.