I too will be interested to see what responses you get. In my opinion, Nexus is about the same as any other brand in terms of quality and ownership experience.. Owner reports vary from ecstatic to shock. New buyers are wow'ed, but the glow wears off with experience. Nexus is terrific at marketing but probably no better than average on quality of design & construction. They make some mighty sharp looking rigs, though.
Their super-C's use an International brand diesel truck as the base, whereas most others use Freightliner trucks, the Freightliner Custom S2RV chassis, or Ford F550's. Freightliner and Ford shops are accustomed to handling RVs becasue there are a lot of them, but International dealers/shop not so much. Freightliner even has RV-certified shops (Oasis dealers), a small plus for owners.