Hi folks, I am looking for an after market head unit (GPS, DVD, bluetooth, USB, iphone, [DVB-T, reversing camera] etc.) and I am a bit confused. I have read this forum and elswhere and understand there are sone cheap Chinese units that fall short of the more expensive brand name units. I was hoping to find something in between for my 2009 Aurion, maybe around $600-$700. It looks like there are a couple of new-ish units available on the market and I was wondering if anyone has any expereince or knowledge about them. The first is a unit that trades under a few different 'Tunez' names on ebay and