Dude people I see here get X10 margin. If I would use that kinda stuff I would triple my money every year! You guys are saying that 30% with all that derivative margin you use it good then 15-25% without margin must be biblical.
i personally dont use more than 5 times margin , profesional traders need margin for pairs trading or hedging strategies , example short bank nifty go long nifty some pro traders have absolutely minor stops but once in the money will pyramid the stock sice they are in the money they are not afraid to use leverage , in the end it boils down to how much drawdown you or your client can stomach ... it all depends on how leverage is used to increase total return on investment nobody cares if you use margin or not if drawdown is not much