Price / performance ratio Top - Prima Navi basis

I acquired the Odys Connect 7 'QuadCore in regard to replacement of my previous TMC Plus navigation system, which proved to be in terms of z.Zt prevailing congestion (A2) to be inadequate in timeliness of the traffic and the workarounds.
If a tray plus software you can get for about the same amount of high-end navigation system, where is the problem of the decision?
As software was chosen co-pilot. The advantage lies in the individual route calculation and adjustment by dragging the route, as well as the low-line consumption for traffic control and speed camera updates.

The tablet does its job well and smoothly. The GPS signal was never lost.
Small Minus: There is no integrated compass, which does not has a negative effect on the navigation.
There is an acceleration sensor on board, with which probably also drive progress will be displayed at driving through tunnels with a co-pilot.
This is based on other 7 "inch devices smaller and thinner.