Before you buy the other plug standard for your place, please check legislation and insurance terms. It may affect liability if you install a nonstandard plug

Most devices I have are compatible with both, perhaps because Netherlands and Belgium are similar markets (because Flanders) and Belgium uses French plugs, so loads of products made for the Dutch-Belgian market will be compatible with both plug types. The only product I own that isn’t French-compatible is from Germany, not sure if that’s an exception or the norm there, but I guess what I’m trying to say is that it might also simply not matter which one you install since it’s easy and common to make universal plugs for these two socket types