C Kingsbury wrote:
If you mainly want a DME/ADF replacement and to use for occasional RNAV
approaches, do you really need either the 430 or the 480? You can buy a used
IFR GPS for less than half of what either of those boxes cost new and get
all of that stuff and save some money to solve other problems. Neither box
will do you any good if the plane is on the ground because you don't have
the money to repair a cylinder.


Don't be swayed by unit acquisition cost alone.
The installation and certification will be a large chunk of the initial
expense, whether an older or new model. They will also both cost about
the same in database updates. So the total cost of ownership of an
older GPS is really not that much less, for MUCH less capability.
That's the reason they're so cheap ;-)