Which reference book is the best

1. Evergreen or
2. Xam idea or
3. All in one ????

All in one because it has summary of chapter with questions

There are lots of questions which helps by the examination point of view the section of long reading text is too good with proper summary and important question everything in grammar section is explained properly. And most importantly there are no grammatical mistakes in answer . I have used All In One but sentence formation in that book is not proper. So you can take others opinion. This was my experience

Which school?

I don't know much about Evergreen

Let me tell you one more thing I have got good grades by using Xam Idea in

xam idea is osm

All are good but please prefer All in one

Xam idea is good for all subjects