I have started using the Garmin Oregon 400i for K9 SAR purposes. It is an excellent GPS,but this is not he place for a review. OTOH, downloading the data, TopoFusion Pro does it flawlessly, didn't even bat an eyelid at the new unit. Maptech (used by command) ground to a halt... The only way was to write the track/waypoint files to a USB drive (in Maptech format -and it is so nice TF does that too-) and transfer it like manually.
Scott, as usual, you are way ahead of the competition.