I prefer Sonar's export options to S1. Granted I haven't dug deep into S1 yet.
Also, if you set up shortcuts for 'from' 'thru' (mine are F9, F10), you can mark the timeline with them. Or, like Craig said, the markers. Unfortunately, I think, that clicking on a marker in marker view sets the now time there. So, you can't really click 2 markers and have from-thru.
I very rarely if ever drag on the timeline to set boundaries.