Highest paying car dealership to work for?

Just started a career in the automotive world as a technician for Toyota. After a couple months I decided to leave it for a position as a Parts counter person for a Kia dealership who is paying me a little better.

Now my question is that I want to continue to grow in this field and I want to know which car brand tends to be the absolute best in regards to parts counter? I have a feeling I should one day switch to a Ford or Chevrolet dealership as an experienced parts counter person or even Bmw or porsche?

First of all, If you want to "grow" a career in the motor trade you must be mad to give up a career as a Technician to become a Parts counter assistant. It may be slightly better paid now… But 3 yrs down the road?
A 'Technician' in a BMW or Mercedes dealership is likely to earn more than in a Ford or Kia dealer but a Partsman is just a… Partsman… Earnings are unlikely to be much different between dealerships.

You'll make more as a tech then you will in a parts department. As you know all dealers have different pay scales

There's NO "growth" in this field. The parts counter is pretty much the same no matter where you go, and it's pretty much a dead end job EVERYWHERE.

Brand has nothing to do with it. The dealership mangement and owner sets their own salary schedules based on industry averages.