DT - vinod gupta module.

IDT - Bangar.

If your requirement is for IPCC then for:

Direct Tax - Singhania for Practicals and Theory from Study Module.

Indirect Tax - V S Datey.

how abt manoharan?

DTL  -  T.N. Manoharan

IDTL   -  Bangar

DTL  -  T.N. Manoharan

IDTL   -  Bangar

In my opinion for self study vinod gupta is good for DT , although it is big in size but, it explains the critical areas of the law in a lucid language with examples.If you have time shortage then TN Monoharan can be followed.

For IDT most of the students follow Bangar as there is on other good alternatives.The book is written in Q&A format which is not suitable for self study .You can also refer to ICAI latest study mat which is updated with finance act 2009.( heard about Dipak Gupta book but it is not available throughout India)

At Final level

DT = Vinod Gupta

IDT = Bangar

AT IPCC

Tax = VK Singhania

DT - T.N. MANOHARAN

IDT - BANGAR