This is a great thread starter, Ben. Kudos on the topic thought.
I think there is a real conversation going on right now about the state of Christian CHR nationwide. There's actually a real debate as to what exactly constitutes CHR to many these days. HisAir.Net (Shameless plug) has a good discussion this week in the Feedback Room with Mike Couchman (PD of WAYK, Grand Rapids) about the state and focus of CHR today.
Now, as to who is the BEST; That's really hard to gauge and really subjective. You've laid out some great starting points with the criteria you have listed. But I wonder how many of us have actually sat down and monitored stations closely that aren't in our market. How many of us can really give an educated opinion based on personal listening?
The following statement is kind of off the laser focus of the topic. However, I'll say it anyway. I'm finding that many of us (myself included) who laud the industry leaders as "the best" haven't really done the homework required to form our OWN educated opinion of these stations. I'm not saying these stations DON'T deserve their titles. I AM saying that many times we tend to look at who's winning the awards and create our opinions of who's "great" based soley on that.
Recently I asked someone who they thought the best AC in the country was and they gave me a list of 3 statons' call letters. I asked the individual what they liked about these stations and they couldn't give me a concrete opinion. They admitted that they really hadn't actually monitored the stations. They just knew them by reputation. While I would agree that reputations ARE earned and well deserved most of the time, I would like to see more of us (myself included) rely on our own opinions to decide who's great.
Just a quick, but related rabbit trail there. Thanks for indulging me.