I began using Shipito about 3 years ago. I was also using MYUS but due to some minor issues I thought I would try another site.
I have now shipped about 18 packages via SHIPITO most of which have comprised 6-8 smaller packages consolidated. So far I have had no complaints about their service. The packages were well packed using appropriate materials and my instructions on consolidation were carried out, except when one package was clearly too big to fit and had to be shipped separately.
I would say that their charges are in line with other shipping services. The big plus for me is that they allow you do make your own customs declaration which can be used to trim excessive import taxes.
I have now begun using SHIPITO exclusively because I have been satisfied with their service and I like their rewards program for frequent shippers. I also had some issues with MYUS that led me to no longer using their service.