Garmin 396 Auto Kit

On the Garmin site, it looks like the "City Select" CD set has been
replaced by the "City Navigator" CD set. There is no price listed for
City Select, but there are prices for City Navigator. Are they different
products or is this a replacement? Some avionics shops are selling kits
with the City Select CDs.

The Auto kit only comes with a 128 Mb card. How much of the US can this
card hold? What size would hold the entire US? How about just the
Midwestern third? Since I don't need the mount, I may be better off
buying the CD and data card separately if I need one larger than the 128
Mb card included in the kit.

I am looking to increase the utility of this $2350 airplane gizmo. On
the ground, I am pretty challenged so this might be useful. Any reports
of how it performs? I am interested in the full bore street detail right
to an address. Out of the box you can only get directions to a city. Not
too useful to me.

Thanks for any info.

Mike