This is the second time I have used uShip; the first being a furniture transport from Florida to Houston, and this time a car from Florida to Los Angeles.
Both times I found competitive prices, much lower than I would have expected. Also the freight provider may try to squeeze more money from you, but as soon as you quote the uShip bid they shut up. Removes the hassle of an argument at the delivery point!
I'd recommend that you should make all your communications through uShip instead of direct phone contact; so that uShip can protect you in case of problems.
I have had no problems with uShip so far, and I hope they stay this way.