V K Singhania - if attempt falls due in May 10 (but contents contain references to diff paras & clauses.. which makes it diff to read & takes more time to complete)
T N Manoharan - not preferrable
Padhuka's - past 43 yrs questions given ( with few printing mistakes )
Girish Ahuja - no such para/clause references as given in Singhania's so preferable
in my opinion: Girish Ahuja & Padhuka's both should be referred