Shield or Amazon Fire TV

First thing, don’t care about the price, only happy wife without grieving me over something is all I am after. Looking at getting something setup for the wife for her sewing room, has to be simple, real simple, biggest requirement for now is Netflix, second be able to put Kodi on it to a least map to the Kodi box in living room (99.9% 1080p with a mix of all the usual flavors of audio and all that good garbage). Eventually will go down the road to a Roku and Plex for her but that means I would have to start working/building a NAS and I can’t be bothered with that right now. No AVR or anything, just a dumb TV. By my reading on here, looks like either these 2 devices should work decent enough correct? Don’t really want to go with a NUC/Windows if I don’t have to although I do have a spare NUC. Am thinking the android boxes will be easiest for her to deal with and for me not having to do tech support. So am I at least headed in the right direction?