I chose to use a Lenovo a2107-f
a 7" tablet, it has no painted on buttons, like most tablets do and all iPads do (as well as an external button)
so the install looks as clean as I can get it to look with my resources...
with this install I chose to do it a cheaply as possible, the only thing that REALLY cost me was the tablet itself
~ $160, the other material I already owned
the tablet was a trade on CL, but the item I traded actually cost me $160 about a year ago
I already had a double DIN stereo so the install kit (the Metra kit)
was already mine, I also purchased a external volume control
a right angle micro USB and audio out
the only other expense expenses I had were 99 cents for the felt backing (felt)
and $4.95 for the paint
a total of less than $35, thanks Ebay
the Metra kit was only used for the front bezel and the side rails, but they are not attached to each other
the front bezel just is just the border of my tablet face
the rails hold the felt back...
my recommendations in software are
NavFree USA (if your tab has a GPS built in) = free
CarHome Ultra for ease of use, it is very customizable (the last pic) = $5 or so
PowerAmp for music = $5 or so
here is my Youtube series
here is also a video of my Radio tuner in action...