Can anybody tell me, Which book is best for INDIRECT TAX?

As per my experience

For IPCC  V K Singhania as well as Paduka is good.

Specially for Indirect taxes Vandana Bangar is Best one.

Regards

To master indirect taxes refer V S Datey (Taxmann)

It is like V K Singhania (Taxmann) for direct taxes

Bangar is very user friendly if read with the Institute material. Bangars book is nothing but compilation of past questions.