You can do everything you need to do with the 430, but there are
situations where havng only one is inconvenient. For about $250 you
can buy an M1 LORAN. Now you get a second set of nav signals
independent of GPS, you can get bearing and distance to any fix at
accuracies better than VOR-DME, and the UI is very easy to learn and
use. And there's a CDI built right into the panel if you want it -
almost no wiring.

Spending $2K for a VOR seems excessive when this is an option.

Michael