I tried to search for an answer, and while I found some interesting comments and reviews on Quartet, I couldn't find an answer for my specific question.
So together with a private tutor, I've finished Tobira but I'm a slow learner (and fast forgetter) and I definitely didn't master the contents at all yet (maybe I really understood 2/3 and maybe I remember 1/3). And to be honest, I'm a bit sick of this book, so I think I'd like to "review" (repeat might be the more appropriate word) everything using a different book. My tutor agrees and suggested I look at books and let her know which I find interesting.
So Quartet seems to be a popular alternative to Tobira now, and I'd like to give it a try. But what's not clear to me is how Quartet 1 and 2 compare to Tobira. Like do they match the content if combined or would I only need Quartet 2 to cover the same content? The Quartet FAQ on this didn't really help me understand this, unfortunately.
If someone wants to weigh in on using Kanzen N3 instead, you're also most welcome, that's essentially the other option I'm currently looking at.
Thanks in advance for any insights!
by redsterXVI