There's an interview with filmmaker Alessandro Beltrame featuring some recent productions and behind the scenes footage. There are also detailed lists of the equipment he used. I think the footage gives a good impression of some of the IQ capable. I really like this guy's work. See here.
There are also some shorts (in SD and HD) submitted at the Wildscreen event, all taken on hpx-171 by up and coming talent. They're nice shorts, all docu-style with strong nature emphasis in subject matter...but also show well what this compact camera is capable of. here.