Streaming can be wireless or wired. With respect to $/SQ ratio you will get umpteen opinions here. IMO it’s equivalent to CD; if you have a CD Player that costs say $1K you need to spend about the same on a streamer to get equivalent quality. And as with CD Players, you can spend much less and get excellent results.Megabucks will also get great outcomes but if you are new to streaming I suggest starting in the low cost area and upgrading if you find yourself liking it