Looking for a double din headunit that has great navigation system.

Like the title says I’m looking for a double din headunit that has great navigation system. I were on ebay looking at a Pioneer but looking for something cheaper because my budget is not that much right now.

http://www.ebay.com/itm/Panlelo-PA-09YZ16-7-Inch-2-Din-Head-Unit-Android-5-1-Quad-Core-RAM-1G-ROM-16G/172762062341?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

theres a lot of good reviews about this one. android based and all that