We used Gulliver's Movers when we moved from our old house to our new house. They were actually our second choice, but they did a very good job packing and moving all of our stuff (and we have a lot of it!).
I did have one problem with them. I bought a bunch of used boxes, but I was charged full price for them. I never did get a refund for the difference (only $100 or so, but still...).