I constantly seek new music. I do try to stick with artists/albums for a few weeks in order to actually build a "relationship", if you will, in the way physical media used to do it. I don't quite build the sequential memory anymore, but I'm at least proud I can identify obscure bands in a shuffle.
As for variety, the genres are all over. I gravitate towards metal. Maybe numetal. But, it's not just the instruments or specific genre, it's the mood and melody. When I worked to compile my ultimate "radio" playlist, I realized it's way less diverse than I thought. It's mostly heavy and sad, even what I call pump up jams. Might not be outright sad, but the melodies are usually downward. At least, that's how it feels. I also appreciate a good buildup. Not a tease before a drop, but stacking more instrumental layers as it continues. Love Deadmau5 for that.
Some pairs: Rammstein/Sonne vs Deadmau5/Strobe Rob Zombie/Dragula vs Noisecontrollers/Pillars of Creation Avenged Sevenfold/Beast and the Harlot vs Taylor Swift/I See You Now
You're not going to beleive me, but they rhyme