Streets and Trips.... My experience:
GPS works great with my
On$tar Hack. Refresh rate is kind of slow, but there is a Software patch/hack to change it. Exact address matching on map overlay is not so hot. Shows my house about 200 yards from actual location. Delorme Street Atlas Shows right on.
Map always shows north up. Can get a little tricky trying to navigate by map while driving. There are no navigational prompts like Delorme.
Streets and Trips is very easy to use for searching addresses and directions. You can easily import data from Excel spreadsheets, etxt files, and even your Outlook Contacts list. You can make different pushpin data files and show or hide at will. Much easier interface than Delorme Street Atlas.
No voice prompts, nor Voice control.
Hope some of this info helps.