Well - I can confirm, the rumors are true. Sway bars are one of the best upgrades available for this car.
I installed new Eibach sway bars today, both front and rear, and the feel going around a corner is a night and day difference. The car feels more connected left and right. The wonky, uncertain body roll is gone and cornering is flat. The steering input is much more responsive.
Now to find some spare time and seek out some twisty roads. So far, this is a definite recommendation. The install was also just as predicted: front = easy, rear = not bad, but F* that one bolt on the driver side. Thanks to @YOWStinger for the write up and tool recommendations. That 18" flex head was perfect for the job.