We went to all flash last year in main dc as well. Pricing got competitive faster than I had expected. Went from dozens and dozens of cabinets for storage down to less than a handful.
Started looking at low-end 10 Gb switches for home network, they are still too pricey. Looks like it will be a few years before replacing the 1 Gb switches and standard gig network adapters for the NAS & main PCs makes sense.