It is important for me as I am deciding between Poland, Sweden, Germany, Hungary, Finland for expat life. ;)
The Hungarian language comes out of this world, that is out of the Indoeuropean world. So is Finnish. It's impossible to compare them to Polish, Swedish or German as they are another league (you will be comparing apples to oranges).
German is very specific. Not only compound nouns make it peculiar, but also the fact that a considerable part of its vocabularly came to it from a pre-Indoeuropean language, the so-called Old European substrate. Theoretically, the best choice for you would be Polish, but then you should judge if you really like the language and at least make a modest attempt to learn a little bit of it.
Compound nouns in Polish are rare. You will find many words of German origin in Polish even if they seem to look like vernacular words (for example, 'Gemeinde --> gmina' is one of such words).