I personally feel that Backcountry Navigator is a great product. I know of no other mapping/GPS software that is comparable for the price. For $30.00 we get all the topo maps of the US our PDAs can hold. The maps are pre-calibrated which is a big advantage over similarly priced software. Tracks and waypoints can be be easily imported from and exported to other mapping applications software(including Google Earth). I also like the fact that  maps can be downloaded directly to my PDA without the added steps of dealing with desktop applications.
The tech support has been outstanding and I hope Nathan does well in this venture.
It would be a shame if Backcountry Navigator does not get some much deserved recognition from the Pocket PC development and media community.