^The heavier bars will keep your roll down, but settling faster is really a job of heavier springs and quality damping. I think sways are a great bang for the buck on the street. But, for a balanced car on the track, unfortunately you have to pay to play as they say.
If you aren't planning on ever going with coils, sways and koni's would be a nice setup for starting out on the track. Soon you are going to want stiffer rates though.