Which type of "Array" (Built-in array, generic list, etc.) is the least expensive?

Hi!

I have a problem...

Basically, I need to find a cheap and fast way to sort 6-10 cars in ranking order. At the moment, I use a generic list. (I used an array before, but that proved to be too slow.)

So what, in any way would be the least expensive array-type class to sort? I initially thought generic lists would be better, but, although there is a performance improvement there, the frame rate still stutters on my pendo pad...