Well, as with many things audio, the more research you do, the more you spend...
I ended up buying a used set of Beyerdynamic DT770's (80 ohms), and ordered a new portable amp - the Fiio e5.
Should be the ticket for listening around the house (not likely static in one area, so a portable headamp seemed the best road), and when I want to go out, I will use the buds.