I personally think its a matter of what ya are looking to make the car do.
The below is what I have been told, so I am not saying its right or wrong, but its the assumptions I have come to from everyone's opinions that have been expressed to me...
Straight line performance, the St's or new stockers are gonna be the ticket. ST's can be had from JC Whitney for $80 a pair, and someone said they could get stockers from autozone pretty cheeply... definately under $100 a pair.
Eibachs are more of a road racing type spring, better ride than the others, but will squat more from a drag racing type launch.
Personally, I am using ST's in the rear, and a Custom coil over set-up like William and I discussed in the other thread..