BRT is excellent
It really is the best site I know of for creating courses.
You can upload directly to the Edge from BRT using the Garmin plugin, and it will save either ,tcx or .gpx’s to the correct location.
After a lot of playing about with the various setting options on BRT, I have had very good results with .gpx with full turn notifications on the 705, even despite it’s desire to recalculate if you go off course. Once you’ve got the hang of it, that doesn’t cause any real issues.
Apparently Tracklogs latest beta release will communicate directly with the edge 705, but I’ve tried it on 3 seperate installs and none of them can detect the 705 when connected.
To be honest I don’t use Tracklogs anymore since finding BRT as it does all I need, and interfaces with the 705 easily.