So I am in Cambodia, Siem Reap, at the moment and I found an incredible car stereo (well it does everything; touch screen, gps, blue tooth, DVDs - the whole works!) and only for $150!

I am really considering buying it, but the only problem is; that I believe i will be stolen very quickly when I get back to Australia.
I live in Newcastle and have had family members have stuff stolen out of their car, and my faith in my fellow nova castrian is quite small.
Its a 7 inch screen; it does detach but that is a pain in the ass. Commodores are easy to break into as well so I am wondering what I should do?
There is another one I am looking at which costs $80 (plays dvds and has a 7 inch screen and is motorised to go in and out, but it is not touch screen, blue tooth, gps).
What should I do?

I was thinking of perhaps putting in a security system of something but I need some suggestions, thanks!