If you are going to the Lancaster AQS show I suggest you take at least one long arm class. I am a sit down quilter but take long arm classes to learn as much as I can so when I can afford to switch over I will not be a complete beginner. Last 3 years the classes used HQ Avantes and you were able to purchase the class machines for a discount. Take the machine home with you and have the frame shipped. Unless it is already spoken for you can actually get the machine you worked on. Also the HQ rep in the classroom will give you information you might not get from the sales rep on the show floor. Plus you get plenty of time on the machine to decide if you like it and like long arming. I enjoyed using the Avantes and now have a sweet sixteen that I love.
Your VA show may have a similar set up if classes are given so you might look into it.