um, its not that bad i guess. Its bad if you over drive the car and you understeer through a turn and kill some cones at your local auto x (I know nothing about that though =P )
Its really not that bad, the integra has a pretty nice suspension for what it is. I think you will really notice if when your in a tight turn on very rough pavement, then you feel the rear end floating around the turn instead of driving around the turn.
The type R is a very sharp handling car and it has trailing arms (limited slip diff too but anyway)...I would not worry about it because any front wheel drive car you get will understeer if you push it to far.