Our BEST all purpose sways are the Progress Technologies Sway Bars. Our Best Budget Sways are the RoadsterSport. Note we prefer to lower the car first with lowering springs or coilovers because that helps handling in all directions (less right and left lean AND less squat and dive, and lowering enables a performance alignment with a lot more ideal camber). Then we use sways to make the car even more flat in the turns and to tune the final balance. Our own Fiat 124 races SCCA using Ohlins Coilovers with Karcepts Sways.