Have you actually tried any other music services though? Deezer for example is MUCH higher quality (noticeable even on cheap earbuds or car stereos) vs pandora and has tons of 'Mix' stations that are genre based, or any artist you choose can have a 'mix' station that's very similar to how Pandora works. I'm not saying Pandora is bad, but I've used a lot of services and I would put it far from the top. The only reason it's so popular in my opinion is because they've been able to exploit the free radio loophole for so long. Now that the rules have changed we're going to see a consolidation in the music streaming industry over the next few years; the only unknown is how quickly.