New data with weaknesses and insufficient space

As I noted in my last two major holiday trips (Baltic + Bodensee), that is not always a roundabout is entered and I am now and then, according to Navi across the meadow, where in reality already passed a federal road, I wanted to get me a map update , Unfortunately, there is no CD for the RNS310 so that you bound to the SD card.

Advantage:
- No dubbing to an SD card necessary
- Works out of the box and data is read quickly

Disadvantages:
- Only 3GB free music -> before I had a 16GB card in the car -> you already achieved with a drive from 6h the limits of the card if you want to varied music
- Card with copy protected -> Transfer to 16GB card accepted

Now for the map data (use only Germany so far):
Here comes the second major point of criticism. It is 2014 and it as Version 6.1. In Navi is only used version 6 displayed (without point 1), that does not matter to me. Much more important is that here again missing roundabouts, which are at least half a year old. Furthermore, I noticed yesterday evening and again that a footbridge is stored as a normal car in Navi bridge, which definitely already exists for several years so.
Furthermore, I had big problems with the navigation behavior. Since dirt roads are taken seriously in the route or routes where no cars are allowed. If a jam occurs in 200km distance an alternative route via a parallel highway was proposed. The jam was natural then away, as we - came to the supposed stagnation point - contrary to the instructions Navis defiantly.
After repeated switching the route options between "fastest", "short" and "economical" the dirt road routing was a little less, but it is not yet quite clear.

For the money, I'm honestly disappointed because firstly it would have been no problem to use a 16GB card and secondly, I buy but no map data from the 2014, on the one hand clearly obtain and secondly endure so idiotic routing behavior old information must.