I used AmeriFreight as my broker to schedule transport of my Nissan Altima from Austin to Seattle.  I have nothing but good things to say.  I was initially contacted by Aaron from Amerifreight less than 30 minutes after submitting my information.  He explained the rates and the Central Booking system to me in detail.  I chose to go with the economy rate, which means that I didn't get a guaranteed pickup date.  However, my Altiima was picked up on the 3rd day of availability (out of a 7-day window).  
There was a slight break in communication when AmeriFreight called me to say that they'd found a shipper and that the shipper would contact me, but the shipper never did.  But when I called AmeriFreight to tell them this, the dispatcher I spoke with was incredibly friendly and helpful and immediately got the shipper into contact with me.
Overall, I would absolutely recommend AmeriFreight, primarily because of their excellent customer service.
                    
                 
                
             
            
            
            
            
            
            
                
            
         
                
                
                    
                    Company Response
                    AmeriFreight from 
AmeriFreight Car Shipping Submitted this response.
                    
Response Date: 9/2/2010 4:27:00 PM
                    
                        This order was handled by our Shipping Agent- Aaron, direct line- 678-552-4079.