Help me chose an Android device for my car

Hi guys!

So, I'm planning to buy something like this for Xmas:

http://www.pearl.de/a-PX8345-1520.s...MIx4uItMKz1gIVLTPTCh1NGgb-EAQYASABEgIVhPD_BwE

I kinda like this one, but there might be better options...

What I'm looking for:
- Quad-core / 2GB Ram minimum
- Built-in LTE (SIM card)
- GPS Navigation
- Price up to EUR 350,00
- It would be nice to have physical buttons as shown above

Before I had one from Pumkin which broke down last year (some component on the motherboard had a short cicuit and the warranty was due of course). It had a very bad radio reception.

Just bought this one from Erisin (there's a standard version fitting all cars, too)

http://www.ebay.de/itm/Android-6-0-...e:Opel&hash=item1e83094973:g:PdgAAOSwIylZwK9x

- very fast
- boots in 2 secs. The device doesn't need much power so even after a weekend there's no problem with the cas's battery (See options, can be switched off = cold boot which takes 30 secs)
- radio reception is perfect
- rds is really working!
- Wifi & GPS is working perfect
- sound is very good
- DAB+ and 3G is available (via dongle)
- no hardware buttons (looks fancy)

Good choice for about 300€/$

Strange: Screen resolution was 1024x600 and I could use iGO (navi) from my old device. After a hard reset, the resolution is now 1024x536 and I can't get iGO to start again (even after patching some files). Anyway. The radio is very stable and now I use Google offline maps.