I don't hear any stereo on WOGL-HD3 (or 4) and the sound is about as good as it's ever been. The RDS is active, though. Now they need to either fill in the blank template fields (show name/sponsor name) or get rid of them. No RDS on the HD-4 so one can assume the PHT simulcast is only engineering testing. Don't know whether that requires a legal ID or not.
On a casual listen, the WPHT HD sound quality is better (and in stereo) than the HD3, but put on a set of headphones, and the AM HD has all kinds of audible artifacts swirling around. Less so with the HD3. And over the last month, the AM HD pops out regularly during Limbaugh, sending me to the HD3. And I'm only 15 miles from the AM transmitter. I'm not sure whether its atmospheric variations with Spring coming or in-house interference. The signal sounds clean, but I just placed a web radio tuner close to the HD radio tuner, so there may be some interference.
The WOGL-HD2 70s format goes deeper than WOGL's standard format, kind of like WMGK-HD2's Deep Tracks vs its main format.