Jaap, hello from Belgium.
Although you have decided not to buy this specific 5906, you may consider buying a third generation S&W pistol at another occasion. I own a 915 and a 6904 and both are reasonably accurate, although neither of them has a target trigger pull.
In my opinion, however, the all-steel S&W pistols in 9 mm Parabellum are unnecessarily heavy. An alloy gun in this calibre is perfectly controllable and if you keep it lubricated it is also durable.
You already owned a 5906 so you are aware that the part of the grip that is just under the trigger-guard is quite rough and can be uncomfortable for some shooters. This was my case (I was developing a callous in my middle finger) so I asked my gunsmith to file it carefully.
Concerning gun laws, they are better over here than in the Netherlands, as we do not have a limitation on the number of firearms that we can own (sport / recreational shooting and hunting being the main reasons to own them). Collectors can even own fully-automatic firearms and shoot with them once a year. If when you apply for a permit you indicate that the reason to do it is self defense / home defense your application will most likely be turned down. However, the most important question in the written test that must be passed to get the permit is precisely about that topic (you may give the wrong answer to some other questions but not to that one). The right answer is basically that a home invasion constitutes an attack and the dweller is entitled to defend life (not property) using proportionate means. The law protects the dweller even more if the home invasion occurs at night as in such case there seems to be an assumption that there is attack to life (I am not a criminal lawyer though). Over here we also have to store guns unloaded but I think this question is already anticipating the possibility that a gun owner uses it as last resort for home defense, in the same way that one can have a butcher's knife at home and use it in such situation for something other than beef cutting...