CompaqAero-SNAV-Winpilot/CUMobile?

For the digital crowd...a question. I am running a
SNAV/GPSNAV quite happily...but will send the GPSNAV
in for calibration and can pay to have it upgraded
to run the Compaq. Before I go this route....

1.) I already have the Aero and all the cables and
mounts
2.) I do not race
3.) I fly CC...but generally check out the landout
fields early season...so the GPSNAV display tells me
distance...but I know where the field is. The SNAV
gives me glideslope to landouts.

What have you guys seen as the main assest when one
upgrades to this type of PDA? The moving map? I use
the GPSNAV to carry task information from the ship.
Any comments on the two types of software? I use
SeeYou for flight analysis and quite like it.