Ca final costing ki best book?

All the above 3 books you specified have their own advantages. If you want a collection of all past questions (CA Final Old & New)  and RTP's at one place go for padhuka, the terminology used in this book is also similar to our Institute material . Vashist and Saxena is also highly advisable. 

go for Saksena & Vasihat ....... this is best book for CA final Costing........... very helpful for self study & Best of luck...............

Dear Gaurav

 I would recommend to start  with  Module and practice manual first , revise both of them and then only if time permits go for any other reference book.As far as the reference book goes, sp tulsian and padhuka are equally good....

Thx. for ur inputs n suggestions guys,but i already hav given Nov-12 attempt & hav exemptions in D.T. n I.D.T....Costin (urf Maths) aur mera chattis ka aankda hai from primary school level...Even in PCC took 3 attempts coz of this subject...I just wanna score min. of 45-50 in this subject.

I had referred Paduka but not many questions come/repeated from this book in exams so was contemplating changing it if there was available any book which is better for scoring..I know Questions asked in AMA paper r unpredictable nd anythin can come..but needed a book which help me to cover both easy nd tough questions so that i don't get foxed as to how to approach d question while attempting in the exam hall...

Have been poor in understanding Decision Making nd Transfer Pricing chapters..though i have got Professional Academy class notes(Mumbai) now.Lets see what happens.......

So wat abt Sanjay Aggrawals book is it not good enough?Also i have heard Tulsian's book doesn't have enough/requisite problems to solve?Should i persist with Padhuka?>>>>>>>