Well the differences with investing an aftermarket anti-roll kit can be substantial over stock. However, I don't have any immediate evidence of any major differences between the track sways and aftermarket sways. It's there, but not in an overwhelming sense. At least from my own experience.
With that said, some of the tubing size between the manufacturers listed vary. Eibach for instance is not as thick as OEM, but they make up for the difference with using a more dense material to better handle the stresses of racing. It's pretty much up to you if you're torn between the brands. Personally, I prefer Eibach and Progress.
Lastly, having a BASE Genesis and upgrading to an aftermarket anti-roll kit WILL seem like a night and day experience. You can't go wrong with them, so if you have the coin, definitely invest in a set.
Fortunately for you, I am having a sale! hehe
With that said, some of the tubing size between the manufacturers listed vary. Eibach for instance is not as thick as OEM, but they make up for the difference with using a more dense material to better handle the stresses of racing. It's pretty much up to you if you're torn between the brands. Personally, I prefer Eibach and Progress.
Lastly, having a BASE Genesis and upgrading to an aftermarket anti-roll kit WILL seem like a night and day experience. You can't go wrong with them, so if you have the coin, definitely invest in a set.