For our move from the US, two comments -- All the companies quoted a rate for 20 foot and 40 foot container. The break is based on both volume and weight. The cost of a 20 foot was around US$7500 from all movers, excluding insurance and any special crating. A 40 foot is ~$200-$300 more. And yes, two sea kayaks in your shipment can suck up enough cube to push you into a 40 footer...
Second comment, regards Asia Tigers -- I had them at the top of my list after reading through the recommendations here on GeoExpat. Their office here in Hong Kong provided excellent service. Unfortunately their agent in Oregon was hopelessly slow, unorganized and unresponsive. We ended up being forced to choose another company because we couldn't get a quote back from Asian Tigers in time to submit to my company.
I let the HK AT office know why they lost the quote. I wouldn't avoid Asian Tigers for this, but if you want to use them for a move from the US, it might be worth keeping all your communication routed through the Hong Kong office, and let them marshal their agent.