Hi there,
The Tin Lizzie company actually makes the Viking MQ 18x8. The Imperial frame that Viking sells is actually made by the Grace frame company. Be sure you are comparing apples to apples though. I will eventually get the MQ 18x8 but have the original MQ for now. The Viking 18x8 has a stitch regulator on it and it is not an add on. I believe with one of the Tin Lizzie's, can't remember which one, the stitch regulator is an add on. If this is a feature you really want, just double check as that can drop a price significantly. Also compare frames. I have been told by numerous people regardless of their machine brand, that say a metal frame is the way to go. Excellent customer service is invaluable though, and if they are setting it up for you and teaching you, that is wonderful.
I am a member of several Yahoo groups and I also recommend joining them. The home quilting systems group is wonderful and there are numerous groups for individual types of machines. These groups are invaluable. I have learned so much. Good luck and congrats on the new setup. :) :)
Kim
Viking MQ on Inspira w/QCC