Are you looking more for an improved feel, or an improved balance in the corners?
If you are not an aggressive driver then i will assume that you want an improved feel there are a number of things,
Front Swaybar and Links will help with that a lot
Radius Arm Bushings and Sub Frame Bushings will help a ton also.
Upgrading the rear swaybar will help with the feel a little, but it's mostly going to affect the balance (understeer/oversteer)