[Hyper4mance2k]

Toe-out in the front also helps with Ackerman angle. You want about as much Ackerman as you can get for maintaining an arc after turn-in. Not a lot of cars are designed with Ackerman in mind, most will have the opposite. Running zero toe with a sticky tire, you will gain toe-out under breaking due to bushing compliance. This will give you great initial turn-in, but without the wear issues and dartyness that static toe out can cause. Also, static toe out can make the car too darty if you daily. It will follow ruts in the road, sometimes violently. I daily my car, so I don't want to fight with it every time I drive down the freeway.
As far as the rear goes, toe out helps the car turn, but it makes it very very darty, toe-in gives stability. Same daily driving issues.

I usually set up my RWD cars with 0 toe in the front and 1/16" toe-in in the rear.
I've had success autoXing FWDs set-up with a lot of roll compliance (no front bar & stock rear bar) and 1/16" of toe-out in the front and rear.

(p.s. gross simplifications above, but gives you the gist of my experience with just toe)