P.C.Tulsian should be reffered for concepts. U can also refer ICAI study mat. as its good for AMA.
Padhuka is basically a good compilation of questions. Its like the practice manual. I am not saying that Padhuka is bad but basically its just a compilation of questions & AMA practice manual itself has a lot of questions. So, I am suggesting you to refer P.C.Tulsian/ICAI module for concepts & for practicing problems u can refer Padhuka or PM.
So, go for P.C.Tulsian + PM + Last 3-5 RTPs.