Recently bought a 2009 insignia with factory fitted DVD 800. In my previous car I had a flagship model pioneer so even if it's a nice system I have to consider it a downgrade.
The Chinese MTCD systems seem to offer a lot of value with 8-core 2GB and a nice capacitive touchscreen for hardware and a nicely customizable android 6 OS on the software side. That at a $450 USD price point seems very interesting, perhaps even more so since that seems to be kind of money I'd need to spend to upgrade the