Good evening, I am in possession of this car radio with GPS inside, at the time the original mounts igo8 but I have the ability to add other maps, I was interested or tom tom or navigon, someone expert can advise and what better compatibility?

This in the car radio : [Please Register or Login to download file]

Since it's a Windows CE6 Operating System, TomTom (program) is non advisable.
I am not sure about Navigon.
The best compatibility would be iGO8 or Primo.

Thx, can you give me a good idea for primo?

Just check in the iGO Program section : program-data-zip-branding-zip-license-f83/

I myself mostly use the 2.4 9.6.13 torrent by Yurbuh Tuggly (program-data-zip-branding-zip-license-f83/igo-primo-complete-torrent-t12043.html), although not on an eonon device.
Do NOT get exited about newer versions. The minor changes in it are mostly device specific and do not justify the newer/bigger build number.

One more thing: I advise to update the global_cfg. (program-data-zip-branding-zip-license-f83/various-global-cfg-t13758.html, go the lastest post)

An alternative is Primo 2.0 (program-data-zip-branding-zip-license-f83/igo-primo-build-211211-dec-2011-torrent-tbm-t9656.html)