I've bought & I'm painting my first Mars set. Set 72093 Imperial Field Artillery.
I think partially because of PSR's often dismissive reviews, I've previously avoided them. They're also difficult for me to get.
In the "flesh", they are surprisingly good. Some flash & a bit flat, they still have good sculpting, excellent faces & cover periods no one else does.
Indeed, I rate them above the average Strelets' set, if not as good as Caesar, Zvesda or HaT.
Imperial Field Artillery is my first Mars set but won't be my last.
donald