Another neat 480 feature is that it will sequence you around to the
missed approach point again without any manual twisting or SUSP button
mashing. This is accomplished by having a much richer database than
the 430.

That is part of the TSO for WAAS certified units, not a function of that
model. Missed approaches sequencing is automatic for that TSO. I believe I
read about that in the AIM. It also has different processing of the CDI.