Eh, I wouldn't really say slave/love has better scenes in every book. There's some kinks I like way more than others in some routes though. Book 2 love route and the Jinora/Pema scenes in Book 4 slave are great. Book 3 had really good content in both routes (it's pretty clear that the Mity team likes Toph a lot. A ton of love and work went into book 3). Book 4 love is turning out pretty good for the first update (we'll see how consistant that is with the coming updates), what with having Katara back again and the opening of the book has some great regular/reverse humiliation going on.