Suggestions for SFM needed.

Hi ppl..

I am super frustrated with SFM.. Which book do I go for? I am from Chennai so I have no clue of how the northy authors are. I have done my attempts so far with Padhuka's and Muralidharan and Pattabhi for certain topics.. But guess its not working. Pls suggest a "one stop" book for theory and sums in SFM... Would surely dedicate my pass result to whoever shall help me!!!