As I often say, the way to avoid repetition is become adventurous and try different formats. I promise you that you won't hear Hotel California on KIIS. Flipping channels among similar stations is like going to similar fast food drive-ins complaining that they all serve hamburgers. Reach out of your comfort zone if you truly want variety.
I rarely listen to the radio at home and even more seldom on the internet, but in the car, yes, and I've got a variety of music stations programmed (I live in Phoenix now, but I'm originally from Los Angeles): Album rock KDKB, classic rock KSLX, oldies KOOL, (when they're not doing talk shows about restaurants or "natural" health products) KAZG-1440 and KKLD out of Prescott; KCDX (when I'm in a part of Phoenix where I can pick it up, generally south of Camelback Road), which is a station that plays a super-wide variety of music (oldies76, ChannelFlipper and SuperRadioFan should try this on your computers; KCDX will play, say Blondie's "Rapture" followed by a Foghat song--not "Slow Ride" or even "Fool For the City" but perhaps their most obscure cut "Chateau LaFitte '59 Boogie"--I know; I once heard that exact segue!), two country stations (KSWG and when I can get it, KRDE), R&B oldies 104.3, and "The Mountain," a sort of "Jack"-type station. Oh, and the station of last resort, KAHM, also out of Prescott and one of the very few "Beautiful" or "Easy Listening" stations left, although a neighbor today was playing local classical outlet KBAQ and I might put that one in as my new "station-of-last-resort-when-all-else-I-can-get-are-commercials-and-'Hotel-California'-again."
For me, it's also the time of day that dictates what kind of music I want to listen to. In the mornings, I'm seldom in the mood for hard rock, so that's when I listen to the country stations or talk radio KTAR. If KSWG or KTAR are doing commercials, I'll do KOOL, KAZG or 104.3. Later in the day and evening, I want my hard rock and metal, so KDKB will be my first choice. (I once even had active-rock KUPD but I got tired of the cookie-monster vocalists and guitar players that wouldn't know a riff if they fell over one, which many newer metal bands unfortunately seem to feature.)