Bars by themselves don't make or break handling.
Can you explain what you hope to accomplish by:
* switching from KW v1 to v2?
* switching from UUC Strut Barbarian to BMW Performance strut bar?
* switching from stock to Hotchkis anti-roll bars?
Also, could you please try to answer my previous questions regarding your goals and budget for the car.
04 IR 330i ZHP | ESS TS2+ SC | MagnaFlow "headers" | KMS 3.64 LSD | AST 4100 550/650| APEX ARC-8 18x9 | H&R front sway bar | Vorshlag camber plates, RTAB limiters | TMS subframe & swaybar reinforcements | UUC SSK & DSSR | UUC TM & TME | BW motor mounts | Dinan strut & shock tower bars | vaio 4-bolt oil pump