My decision was based on
a) my wish for a big/bright/interchangable viewfinder
b) in the beginning I just focused on maybe 2-3 smaller/lighter lenses like the 40/80/150 (but later I got inclined by the "monster-lenses" 110/2.0 and 180/2.8)
c) The 75LV is the back which was the best compromise IMO regarding noise-sensor size-flexibility (no micro lenses)-and price
d) if using WLF the rotating back made a lot of sense to me
e) I liked the rendering of the dalsa sensor as well as that of the Schneider lenses
f) I thought I would use fill flash more oftne but actually I dodnt so far
The decision for the Artec was driven by the thought that specially for doing T/S plus for focus accurancy a ground glass would really make sense (and I still believe it does). The Artec is not really heavy - the draw back is that you cant handhold it and it is wider.
As soon as you do use a griundglass the Artec should be much easier to use than a comparable camera.