My vote is for #2.
The amount that our family spends thru Amazon, a 5 - 15% savings would amount to a lot each year. Plus I see Amazon as the Costco from Idiocracy, eventually will be only store and will have everything, ever. Hopefully the decentralized systems being developed now will go a long way towards disrupting their plans of world domination.
I am curious what your view is on #3 too as it is always good to read others experiences.