[Dimis]

Welcome Fender.

Your question is really open to interpretation...
It's really a matter of what YOU want out of your cobra.

You ask a dozen people and you'll get a dozen different answers.

Any cobra can be registered... Just depends how deep your pockets are to meet engineering. Backdraft and SPF are S.African and have been imported into Aus.
Intact from memory I believe Backdraft are on the REVS list, and there are SPFs getting around in Aus.

So now with that said - What is it you want from your cobra?

The build?
The drive?
The look?
The ownership?
The friendships?
Other?

From there we can better assist you with your research.

Enjoy