What's your favorite music/radio app for Windows 8/RT?
Recently, I've started typing up a playlist I would eventually use, so I wouldn't forget all the songs I enjoy listening to. Stupid, I know, but hey... my memory's not so good sometimes. So I was thinking, whenever I got Windows 8 -- or a device that has Windows 8/RT on it -- I would be creating my own (now very long) playlist to play every day (and night) through a music app, kind of like my own personal radio station. Now, here I was thinking that Xbox Music would do the job, but apparently, there have been numerous posts and comments on this forum saying how bad it is, so that bursts that bubble.
And yes, I know that there are some apps and services that would allow me to do this, so I'm wondering: what apps would you recommend? Through my browser, I've used TuneIn (pretty good), AOL Radio -- Slacker in very attractive disguise, basically, and also good, -- I used Pandora for a little bit, and I've heard about iHeartRadio, though I'm not exactly sure what it is. So I thought I would get some opinions about whatever music apps you use.
Provide your thoughts about the apps I already listed, and give some feedback about some others I may not know about. Thanks!