What would you want to do and for how long would you want to be in the Netherlands? What would your sixteen year old want to do? Do you (and your son) speak Dutch?
Plus sides:
It is a nice country, everything is close by. Good railways, quite good bus services, many places you can go around by bicycle (good cycle lanes).
Also, if you are in the Randstad (area between Amsterdam, Rotterdam, Utrecht and the Hague) and you need a doctor OOH or within normal hours, all this is close by, easy to get appointments, some doctors still do home visits.
You can do lots of sightseeing. There are lots of museums (most are free entrance if you have a Museum Jaarkaart). Also nice nature reserves. If you like sports, then there are lots of clubs.
Down sides:
It is very expensive though compared with the UK. Taxes are high, goods and services expensive. Health insurance is obligatory and very expensive (about 120 euros per person for the basic insurance plus first 360 euros is excess charge, however, your sixteen year old probably will be part of your insurance). Service is hit and miss.
Areas:
There are quite large expat communities in and around Hilversum, Utrecht, The Hague, Wassenaar and of course Amsterdam.