you're better off running camber setting which will improve lifespan of tyres. In this case, you should aim for about -1.5deg on front and about -0.5 on rear. The rear you will want as neutral as possible. This will depend on height of car and the range of your camber setup.
Ive got two rear camber bush kits on the rear, best could get with my height was -1 degree
Talk to your suspension workshop regarding best setup. I recommend Traction Tyres in Rowville. They will point you in the right direction based on what you plan to use your car for.
The more front negative camber the better. As you turn through corners, car leans onto the outside wheel, enforcing positive camber. By dialing in negative camber, the positive camber occuring through the turn balances this out and applies more tyre to the road. Hence better grip/traction through the turn. So, if anything, less understeering.
The rear you would like minimum camber, as to provide maximum grip during acceleration (more grip to the road). However, having too little negative camber and going through a corner will create positive camber and may cause you to spin out if accelerating due to the smaller tyre footprint.
Basic explanation, so dont shoot me down with specifics
Camber = serious business