I have learned:
- simple is good. When I have 8 different types of diapers and half of them need snapping in inserts or stuffing or folding or even just matching up their special inserts, laundry is a PITA and I am the only one who can properly sort/fold/put them away. When I only have 2 kinds it is easy and DH can do it too.
- Like Ashley... I love prefolds

I should have stuck with them from the beginning instead of getting obsessed with trying everything, and I should have started trifolding sooner to stretch the fit range. (I can still trifold medium GMDs on DD but she outgrew snappiing or even pinning them when she was like 6 months old!)
- Even though most people love snaps for durability, my hands are dumb with snaps and despite the tattered look it often gets and the occasional laundry chains, I love hook & loop/aplix for adjustable fit and fast changes.
- I love wool but the less time I have, the more I put off washing and lanolizing it, and I just can't do it anymore for #2. I will be doing more fleece instead.