I agree to go to the store and try out the machines. I have a few Vikings (not these) but they are all great. You need to find the one right for you in your price range. I do know that Viking has just done a no finance deal again but I'm not sure which machines that is for. I'll include the website for my LQS/dealer and they have links for info on at least two of these machines; I didn't look under the gently used section to see if the other was under there. I hope this helps. Good luck; you'll love Viking.
http://www.bellafabricsva.com/sewing-machines.htm