That yeller wing looks cool.
Fuzzy, you there???
Harley trikes carry the full warranty off the showroom floor.
Not sure what Honda will cover on an aftermarket conversion. Best to check with Honda North America before pulling the trigger on a brand new bike conversion.
Never ridden either so I have nothing to offer on ride quality or reliability.
Go with whatever makes you & your sig. other comfortable, both financially & physically/mentally...