when you open the hood of a Cobra you should see the (dare I say trademark ??) x-brace.
You will notice the difference between a Mid-States and an ERA,
the MS has a large empty area, while the ERA look's like the original Cobras.
Plus, I can use a shock with more travel=better tuneability and control of the suspension.
I guess I am just picky about the details.
Just my personal opinion.
Cheers,
Bill Cook