Just curious as to your rationale & your thoughts on efficiency!

I have a Medela pump, one microsteam bag, three sets of parts, many extra valves and membranes, lots of bottles, and a manual pump. I will be pumping either 3x a day at work or 1x at home & 2x at time.

Also, side-note, for those who use the dishwasher, what do you do with the membranes? I've been storing them in a tiny tupperware in the fridge & boiling 1-2x a week; since I think they'd get lost in the dishwasher. Whenever I boil, I throw in any other similar items that need to be cleaned.