depends on how much of your whole roll u have inovled i believe i'm a better poker player then most soo there for i don't like to call all ins preflop.... even when people push and i have aces i don't like calling, seems those are the types of senerios where i do lose most of my bankroll by making those all in calls preflop..... 9/10 times i will call thow because i don't have near my entire bankroll at the table!!