On Nov 9, 10:05 am, BB wrote:
I've also been looking for a GNII replacement.

-- good analysis snipped --

Me too.

Here, in Colorado, the winds are really flaky, so the GNII display of
instantaneous headwind component and difference from current vector
wind is a must for me. I'd love to be able to enter manual "winds
aloft" as I often fly a final glide in a tailwind, bu that can switch
to 10-20 knots headwind at 3-5K AGL (based on AWOS at the home field
and my guess of the altitude when that happens).

What's currently missing in GNII:

On the fly OLC optimization

Glide footprints based on terrain.

Modified final glide - adding some extra waypoints "on the fly" so I
can follow an off course cloud street, go around airspace, mountains,
blue holes, etc..

When 'fun flying', the ability to create a task some time after
leaving home, and having the software figure out the start time by
examining the historical flight data

On a declared task, not having to press the START button as I cross
the start line (see above) I want a button that does "I started a
while ago, go figure it out for me"

Automatic task finish - the last thing I need to be doing is pressing
the FINISH button while finishing with a dozen other sailplanes
nearby.

ALL airport data. Many airports here have an AWOS, but most airport
data available online and available in PDA software only provides a
single frequency for the CTAF. I fly near several tower controlled
airports, so not only need tower frequency, but ATIS and approach
control frequencies. Here's an excerpt for Colorado Springs from
AirNav.com:
UNICOM: 122.95
ATIS: 125.0(719-596-7040) 254.3
SPRINGS GROUND: 121.7 348.6
SPRINGS TOWER: 119.9(WEST) 133.15(EAST) 335.55(EAST) 360.6(WEST)
133.15 335.55
SPRINGS APPROACH: 118.5 239.025 120.6
SPRINGS DEPARTU 124.0 257.875
I carry current sectional charts, but as many of you know, sometimes
conditions can go from good to marginal (too busy now to find and
unfold the correct chart), to "oh crap, I'll need to punch through COS
class C to get to a safe landing spot".

-Tom