Chicagoland performance shops

[apextc80]

I just picked up a 2009, modified Z (true dual Stillen cat back and Takeda intake) and after market wheels.

I've used the search function and google, but can someone please tell me of good performance shops in the Chicagoland area for our Z's?

The ones I came across

1- GRD. I heard they are great but a little steep on price. No one's fault, just an observation while researching.

2- Auto Repair Shop Naperville IL | Providing Car Maintenance & Service (close to my area since I'm close to Naperville) - have not read anyone on here go to them

3- Ultimate Z - from yelp to google, this place has so many mix reviews I'm not sure what to make out of it.

Any others that are competitive in pricing and trustworthy for me to go to for sway bars, oil changes, coil overs and a re-flash down the road?