i would ask to try them out- if you went to a dealer to purchase a quilting machine/table you would test drive it-
see which one you like better---and wow---16 foot table!!! that is huge---i've never seen one larger than 14 foot and i thought that was the (Rolls Royce) of quilting systems- being a gammil that cost more than my car.
but- i would not consider either with out trying them out & seeing how they work- what kind of features they have- you also want to find out where you can have them serviced, where tech support & possible classes could be found- contact the manufacturer websites & see what is available- what kind of upgrades may be available- how to maintain it- ...so many things to consider...and check out & if you are test driving- you will have plenty of questions pop into your head---what kind of shape are the tracks in? the carriage? lighting? ...