My 2c: We sold off all our furniture thinking we'd get somewhere furnished or that our stuff would never fit into a flat here.
We were wrong! Even the furnished flats we looked at had awful furniture that we would have asked them to remove as part of our offer. In the end, we got a 700sq ft Edwardian 1bed, unfurnished, and realized all our furniture (except the guest room stuff) would have fit perfectly! Even the massive sofa. We have spent more money on new furniture than we would have on a container. I'll admit, we could have done it cheaper - but I need a Tempur mattress for my poor aching back and cannot abide an uncomfy sofa. We have decided that this will be our "forever furniture" that we will ship if and when we move again.
So really, if you know the dimensions of where you are going, ship what you can if it doesn't cost much more! All my belongings arrived this past weekend and I am so happy to have my plates, cooking supplies, knives and tools! So worth shipping.