Express shipping to USA works pretty good, all packages are delivered for now expect one which for some reason is not seized or lost but returned to me.
From almost a month I am shipping the normal packages to USA in a different way which costs me 50% more and I can say it is more reliable than PostNL, doesn't show as posted from Netherlands but Bulgaria/Germany/France, arrives in 14 days +- 2 days. With PostNL there were almost zero problems, except from time to time it took much more time than the usual to arrive. Not that it wasn't the same with the previous courier, just some packages get forever to be processed from the US officials for some reason.