My process is as follows:
1. Overnight soak in a laundry sink full of water + 2 scoops oxy clean (just the regular walmart stuff, because 'free' is hard to find in my area)
2. Rinse in hot water/acid bath (second laundry sink full of very hot water and a couple cups of vinegar)
3. Pile bottles in laundy basket to dry
4. Quick star san sanitization on bottling day
I can do 30-40 bottles at a time this way. Easist and most effective system I have found yet