Pioneer AVC-F20BT / Kennwood DNX9260BT which take?

hello in the august comes the astra caravan 1,6 lpg ecoflex. have ordered it only with cd30 mp3. because the 1800 euro for the dvd90 is too expensive for me and the part can be whiny. now I swarm between the Pioneer AVC-F20BT / Kennwood DNX9260BT the one dealer swears on pioneer the other on kennwood. who can tell me his experiences. doofe question yes I know blabla seems to be here also a knowwod forum?! think both devices do not take so much. the kennwood should not have the tacho signal to werten the pioneer already, therefore this can not navigate even with no reception properly further. in the kenwood are quite cumbersome with the kennwood, with the pioneer there is a program for it, where you can also adapt the surface …. that goes with the kennwood again more comprehensively if I read so… can be the same with the device.