Your examination Deu in Nov 2010. i.e. after 1.5 month.
It means you are already studied auditing from any book.
Remember one thing that all book have almost same thing. only difference is some book is user friendly and other is not.
Do not get bothered which book is best and which book is not. You study from the same book from which you already studied.
If you are not studied any book then go for Surbhi mam book with study material and do not think covers all aspects or nor? Ye question tab aachha lagta hai jab aapka preparation 80 marks ke level tak ho chuka hai and u r expecting preparation for 100marks.
As fas as Capital budgeting is concern it is most important for new syllabus because only one time question has appeared in new syllabus. but in old syllabus in everyexam