Sunny sounds like it'd be AC but it's much more wide-ranging than that or even a typical classic hits format. I've got it listed on my site as "variety hits" since it seems to dabble in everything from the mid-60's to today's pop currents. Their emphasis is on southern Baldwin County (Orange Beach, Gulf Shores, Foley) and Perdido Key, FL, but the signal does make it into Pensacola for the most part. Between the wide playlist and the extremely focused, local sound to commercials and PSAs, it doesn't sound like any of the bigger corporate stations.
Just my personal opinion, I do think it's "radio done right" and it appears their formula has been successful seeing as how it's been basically the same presentation and format for as long as I can remember.
The only reason I don't listen to it more often is because the overall sound quality (processing) of the station is horrific and annoys my ears. I'd say the squashed, midrange audio is like "AM, but on FM", but that is a disservice to some well-processed AM stations in our area! Much like the wide playlist and hyper-local focus, that has also not changed in as long as I can remember.
Jet has a much narrower playlist and has that bland Cumulus corporate sound to it. The audio quality is fantastic and the spot load seems to be pretty low, though, so that wins points in my book. 96-1 The Rocket has the narrowest (classic rock) playlist and is definitely heavier sounding than Jet or Sunny. (And has also had a weird audio issue where commercials and DJ banter all play only in the left channel, and it's been that way for YEARS.)