Rear control arm bushings - Upgrade or OEM

[Max1er]

As we "all" know the M3 rear arms aren't worth the upgrade against the stock Non-M arms.

I have a few rear bushings that are loose/needs remplacing.

Would it be worth it to upgrade the bushing on a street car that get some occasional track use (I plan on going more) ?

Should I keep it simple and stick with OEM or get some "upgraded" bushings and change them over time when the stock one go out ?

Here's my pretty moddest setup on my 128i :

M3 Front control arms (All of them)
Dinan Camber Plate (Maxed out "camber" slot)
Koni Orange + Eibach spring (that combo sucks ass)
335ix rear sway bar (15mm)
F30 brakes + SS lines + Hawk HPS 5.0
-3.2° F (1/32 Toe) and -2.4° camber (0 Toe)

I'd love some intel ! Tell me your rear suspension setup please !

[HP Autosport]

Street car use OEM bushings.

Rear upper and guide links are worth the upgrade to the M3 style.