Bought my Block Rockit in Paducah. What helped me the most was having a friend who owns a much more expensive machine give her seal of approval to the smaller and less expensive machine. She took me from booth to booth and agreed that the price of less than $5000 for a 15 inch harp was great and that the machine had all of the features plus a smooth drivability that I would need. If you happen to buy from Lynn and Kathy, tell them I sent you! The are nice enough to give me a $100 for the referral even though that you is not at all why I am making the recommendation. My main point is to take a friend with you that understands machines.
Ps I have had my machine about 18 months and still am very happy with it!