Hi,
I'm new to GPS tracking and BT747. I got my iBlue 747A+ recently and I'm really happy there is such a good crossplatform OSS tool I can use.
Anyway, there might be a feature that BT747 not have but what would be nice to have: a diagram of hight/speed to time. The enclosing Windoze tool "GPS Photo Tagger" has such a feature (apparently - I didn't try it out: click).