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.

As an instructor, teaching in a GPS that makes heavy use of softkeys
just makes things one level more difficult. In the 480 if you are on
the wrong page, you can't swap com1/com2. The 430 has dedicated buttons
for nav/com. Again, not bashing the 480 but its easier for me to teach
the 430 than the 480.
I've done instructing in the G1000 (430 basically) and found that the
most difficult (at least VFR) thing for pilots to learn is how to
change pages and manipulate the cursor to enter data. However, the 480
is certainly a more capable unit but more difficult in that regard.
Also, I don't think the method of having a departure page, enroute
page, and destination page for the flight plan is intuitive in the 480.
In the 430 the start is the departure and the last fix is the
destination, which seems more intuitive.

-Robert