We recently moved from NSW to Poland. OSS packed a 20ft sole use container for us with approximately 18m3.
The two packing guys arrived onsite on time and ready to go. They packed 71 boxes in four hours. Everything was packed extremely well in solid boxes and well inventoried. Upon arrival in Poland there was not a single squashed box or damaged item. Even the unpacking guys commented how well it was packed.
I would definitely use OSS again and recommend them to anyone who plans to move long distances.
Overall fantastic experience.