im a big fan of coilover suspension setups but you do make some good points on why a spring setup can be better.My honest opition is to do springs and an adjustable shock. Coilovers are "ok" for ride height adjustments but you can never get the car to be the same height on either side without hours of playing around. The benifites of doing a coil-over, over a shock/spring combo with the proper rates is minimual. In my opion not worth the money. My car has factory mazdaspeed lowering springs financed into the car and I got warrenty on the suspension still. I track it and you can view the pictures in my post under the new members section. Car drives flat and looks fine. Not to low not to high. Any lower then what I have would just be a pain and depending on the height dangerous. I see too many people riding the bump stops on coilovers losing all suspension ride and in turn reducing there abillity to corner. On the other hand if your looking to be low, coil-overs are the only choice.