Hey, I'll post my favorite whine about most of the current packages.
I used SoarPilot a lot up until a few years ago, when I finally got
fed up with the crappy Palm connectors. However, SoarPilot gave you
final glide information in a table, showing the arrival height (or
glidepath delta) and target speeds for a range of MC settings.
It gave me a better indication as to how much cushion I had in my
glide. The little green/red arrows in XCSoar and SYM tell you that
you can make it, but you don't have any feel for what running into
some sink will do to you.

Matt