I got the brother PE780D (just like the 770, but it is the disney version)
The only reason I went with this model is the usb port.
I paid extra for the machine, but I don't have to buy any programs for the computer to format/use patterns from the internet. (the basic program is $100)
I've used stuff that came with the machine as well as internet patterns (my fav site is embroiderylibrary)
=)
edited to add -- you HAVE to buy a disney machine to do the disney designs. even if you buy disney cards they only work in disney machines. That's why i bit it and paid $$$ -- but i'm glad i didn't settle.