The 530W is apparently missing some previous nice features of the legacy
units- namely, on the main nav page you can display lightning, but not
nexrad.

Also, on the older units you could show nexrad and lightning on the same
page, but on the 530W you can only look at lightning.

On the map page, but not the main nav page you can display both, as before.

What gives with this? Why are we losing functionality with the supposed
upgrade?

My avionics guy called Garmin on this, and got some weak answer about range,
or some such, which if true, should have also been the case in the legacy
units.

I'm picking up my 530W/430W installation this Wednesday, so should have more
info at that time.