2.) at end of each answer, concepts are not explained.(instead for example, they say "refer para 34" and then You have to search)
3.) the print size is very small
fully agreed
if u want to do reaserch than just clear ur exam, u must go for singania otherwise Ahuja is best.
there are diffrences in comcept too, among these author. for example. in case of calculation of annual value of house property, where property was vacant for certain period and expected rent is taken as gross annual value, amount deductable for vacant period is calculated on basis of expected rent in Ahuja whereas it is calcutaled on basis of actual rent in case of singania.