There is chaos in my sketchbooks! Currently I have #10 and #8 which are like 1/4 full and fresh #11. This is because I kinda thematically separated them. #8 is for figure drawings, #9 was for inktober, #10 is for copies of other artists and #11 will be jusst another regular sketchbook. Also I fell in love eith these Moleskine Cachier sketchbooks so i will be using them for some time. Paperblanks are awesome, but a bit expensive for my doodling.
Also after a half year of trying different software I have bought Manga studio (Clip studio paint). Seems like solid alternative to photoshop. There are some performance problems and tablet driver problems, but nothing that serious. If you dont need texture brushes, i say go for Paint Tool SAI.