[Lancelot]

The difficulty with bars is finding the right balance between taming roll and keeping suspension independence: with bars that are too stiff, potholes and similar bumps will upset the entire car balance, instead of leaving the single wheel / damper absorb the shock, it will be transmitted to the entire body.

Springs and coilovers do not have the same inconvenience so it's a better place to start in my opinion, and if not enough then use bars as a stage 2.