One man's opinion. comments, (and personal taste).
Best: Radio Bop (Especially if your taste basically just runs through the mid 60s, and you also like a little "non-rock" pop stuff mixed in. The music is probably the best reflection of what top 40 radio playlists actually contained during the first decade of the rock era.)
1st Runner Up: Rich Bro Radio (Super-deep playlist...like Radio Bop...but includes entire 60s decade. Less "non-rock" pop. Vintage jingles)
Honorable Mention: Hy Lit Radio (Crystal clear 128kbs stream. If you like more of an "East Coast" sound, heavily salted with Do-Wop and classic R&B, this is the one for you. Loads of vintage jingles here, too.)
Honorable Mention: WDJO (Terrestial station from Cincinnati with a great-sounding 128kbs stream run by pros who really know what they're doing. Legendary jock Dusty Rhodes heads an all-star cast.)
Honorable Mention: Oldies 1650 (Dallas low power station with 60s-style processing but a low-quality stream. Loads of vintage commercials. Perhaps the best re-creation what '60s top 40 radio presentation actually sounded like.)
Honorable Mention: Real Oldies 1690 (Clear Channel terrestial Chicago station that signed off in 2006, but continues as a jockless and adless stream with an excellent music mix over a medium-quality stream.)
Honorable Mention: CKOC or CISL (Canadian sister terrestial stations in Hamilton, Ontario and Vancouver BC respectively. Canadian stations have deeper playlists than those in the U.S...partly because of "Canadian Content" rules. But More U.S. and British titles as well.)
Most Promising Newsomer: Oldiesamerica.com. Jury is still out on this one, there are still a number of bugs...but also some encouraging signs.
Most Eagerly Anticipated: Radio Bop 60s. Every reason to expect that Harold Levine's next labor of love will be another fantastic effort!