I've owned the px3, px6 and now this sc7862 version of the android vertical head units. The concept is undeniably cool, a large android head unit that integrates seamlessly into the dash of supported late model cars.
However, with a 3 core processor and 2 GB of memory, the px3 was far too slow to provide a satisfying experience. It looked awesome in my dash. It integrated perfectly and drew lots of positive comments/questions but the performance was frustratingly slow, almost to the point of being useless. The Google Play store had to be sideloaded and crashes were frequent.
The px6 was a big improvement, with a 6 core processor and 4 GB of memory, performance was substantially improved but it was still just barely fast enough to make these head units practical. I used this model for 2.5 years. The Play store came preloaded. Apps were still slow to load and Google Maps performance was useable but poor.
Now we have the new sc7862 based units... With an 8 core processor and 8 GB of memory, this is the version that finally realizes the full potential of this product. The unit is snappy. No more delays when typing. Google Maps runs smoothly. Apps load quickly. The UI has been updated and looks far more sophisticated than the earlier versions. Also, there is an option for glossy or matte finish. The PX6 I had only came in glossy which conflicted with my interior materials. My new sc7862 has a matte finish that looks convincingly stock.
Make sure to pay a little extra for the 8GB version so you have that peace of mind that you won't run out of memory, which slows the device.
If you've been on the fence about these head units for the past few versions, this is the one to jump on. Performance is finally up to expectations. The past two units really seemed like beta models that showed a lot of potential. This unit is that potential fully-realized. Get one, you'll love it as much as I do.