Hello Ayush,

I would like to tell you that if you are a reader and love reading long paragraphs full then definitely go for the Akash modules as they represent NCERT a lot.

If you are not a reader  and  want to do smart work, you possess a sharp memory and you love memorizing statements and direct formulae go for Allen

If you love challenges and need a mix of points and paragraphs then pick up the resonance modules.

Hope this helps and all the very best!