I have a lockright in mine and im very happy with it.
The reason I went down that path was at the time, 4WD Systems had a backlog of around 6 weeks for their lokka and a $150 higher price tag.

Got mine from toptraction.com.au for around $400 delivered so its around the same at the reduced price of the Lokka, I think they are realising this now which is good.

If they're both in stock and around the same price, I would probably go with the Lokka as its Australian made. They are the same design and both very well made so its just a matter of personal choice, availability, price etc