Back story: My '04 E46 ZHP has 72,000 miles and original suspension. I recently got into autox and love it! I am looking to replace my OEM suspension this summer with something a bit stiffer for autox. I will most likely add camber plates when I overhaul my suspension. I have heard the stories of strut towers mushrooming under stiffer suspension setups. I am looking to get both the E46 strut tower reinforcement plates and a strut tower bar to avoid this issue.

My question: What is the best performing strut tower for a decent price that will allow for camber plate access? Cosmetic looks are not important to me. I am currently looking at the OEM E46 M3 bar, and ECS tuning actually has a kit for $369 that includes the reinforcement plates.

http://www.ecstuning.com/Search/Strut_Brace/ES2500896/

Is this a good deal? I've searched a bit for a used M3 bar, but have not seen anything recently.

Or am I better off saving my money and getting a aftermarket brand strut bar and ordering the reinforcement plates (cost $30) separate?

Example: http://www.ecstuning.com/Search/Strut_Brace/ES5435/ ($99 strut bar)

Any information is appreciated!