If you're looking at adding to the handling aspect of your ride I would definitely recommend sway bars by Whiteline. I think they were roughly $150.
check out
www.ctmotorsport.com
This is where I ordered my front and rear swaybars.
IMHO, these would make your car handle well, but to get the most out of them they need to be used in conjunction with a either aftermarket springs & struts or a coilover system. (I would recommend
www.jic-magic.com for coilovers)
Don't get me wrong they will work fine without any other suspension mods but you will notice even more difference with an upgraded suspension.
Most ppl tend to just use an upgraded rear sway bar because it tends to make the car less prone to understeer.
I went with both of them and the car as a whole feels much more balanced and stable than it did before.
When going through an aggressive set of turns the car rotates much more freely than when it was stock and there is a significant reduction in body roll as well. Bear in mind that I changed my suspension before upgrading the swaybars so your experience may differ.