I used upakweship when I moved in September 2011. I was really pleased with them, especially on the US end. I shipped about 20 large boxes and 5-6 very large plastic tubs. Two small, cheap items got broken but both were MY fault, as I was running out of packing material and didn't pack them as well as I should have. I thought it took a bit longer to get my stuff delivered (about 2 weeks longer than I expected), but all in all I was very pleased.
The US customer service was awesome. A few days before the day they were supposed to come and get my things, we had a bad storm/flooding and were left with no electricity for days. The people were really nice, patient and calming, considering I was flipping out because I had no internet/phone to reach them with my forms.
I still remember crying on the phone from the stress of visas and moving and mountains of paperwork and the guy saying, "Sweetie...... don't cry. I *promise* you, we are going to get this all sorted and you don't have to worry about a thing." And he did!

So I have nothing but good things to say about them.