I use heat for botles:
- add a few drops of water. Moist heat sanitzes better than dry heat.
- cap with aluminum foil.
- put them in the oven
- bake them at 250 F for 2 hrs. The timed bake feature helps a lot
- let the oven cool w/o opening the door before removing them
- fill with beer and keep the aluminum foil caps for future bottle sanitations.
It takes a bit more lead time than star san sanitiation but there is no rinsing or draining required. As for actual amount of work it might be the same amount.