Being pragmatic and from my experience with various resolutions:
- compressed AAC/MP3 etc of reasonable bitrates: absolutely fine for portable hifi and OK for proper hifi, but for home I prefer:
- 16/44 as it has a bit better sound and excellent availability of music (on CD). If itunes-like downloads went 16.44 I woudl be extatic
- 24/96 is nice to have BUT basically not avaialble and I would still prefer a good recording in 16.44 or even in 256 AAC/MP3 over a bad recording in 24.96
- 24/192 also not availabe, files too large and I cannot tell a difference to 24.96 (and I challenge anybody who say they can!)
so forget 24/96 and 192 but give me 16.44 downlaods. and for high quality palyback all you need is: ipod/iphone or similar for portable and an SB touch (or similar affordabe streamer with good user interface) + amp + good speakers (skip the amp if active speakers) + good remote