I love everything about Chatterbox, whether it's Reed Tucker (best radio segment ever, bar none), Fernando Martinez, the horny British guy who wanted a "nanny," the "Citizens Raging Against Phones (CRAP) member, the disgruntled veteran with his confusion about American wars (they never fought Australians), the paranoid-of-the-government guy, the man who eats wierd animals, and the commercials like "Pets overnight dot com," "the Liberty City Medieval Arts Fair," and "Fernando's new beginnings." Forget all the other radio stations in GTA III, Chatterbox was the only good one. You could actually visualize the people by their voices.
I liked VRock the best in Vice City. Not only because it had Lazlow in it. It has all the songs I have in my mP3 player. That's the music I listen to while walking to class every morning or when I'm driving to work. Plus, it had a couple good commercials like "Complete the Look" and Ammunation "The store leading the fight against Communism is having a BLOWOUT SALE!...where you can buy an anti-aircraft gun actually used when we whooped Australia's ass!" taking from the disgruntled veteran from GTA III. I also like the movie trailers like "Exploder," and the "Stone Cold Prostate tour" where they tell you to "shoot your son." On other radio stations, I like the commercials for "In the future there will be robots" and "Yuppie and the Alien." Vice City will always have a special place in my heart.
I never liked any of the radio station in Sand Andreas. That was my least favorite title of the series anyways. Too much to do and manage. K-DST had some good music though.
GTA IV has plenty too. They did the rock station right for the first time apart from Vice City with Black Sabbath, Stevie Nicks, ELO, Bob Seger, David Bowie, Queen...it's all great. I also like Ranetki Girls with "O Tebe" on Vladivostok. Those girls have beautiful voices.