In article . com,
"JD" wrote:

480 is more capable (has holds, etc), but the 430 is *MUCH* easier
to use. If you are a computer geek, go with the 480. If you want easy
of flying, go with the 430. If you think you may want to fly G1000
someday, go with the 430 because the nav side is right from a 430.

-Robert, CFII

I tend to disagree with Robert, I think the 480 has a more intutive
user interface.

"Ad-hoc" holds: You can define a hold point at any user waypoint or
database point. Specify the leg lenght in mins or miles/Kilomiles
(grin), direction of turns, etc.. The 480/GPSS will drive the hold for
you.

One thing about holds on the 480 that's counter-intuitive is that the
inbound leg is always defined in terms of "course to". If ATC says
"hold south of Carmel VOR on the 180 radial", you have to enter "360" on
the hold screen. If you enter "180", you end up holding north.

Of course, one could argue that the classic phrasology for describing a VOR
hold is counter-intuitive, and the GPS does it "right". In any case, it is
different, and I've seen it be a cause of confusion when teaching people
how to use the box.