this is in now way scientific.. just my observation today.
I did an A/B test on two older tuners I have hooked up to my SDA 2 ch separates..
The analog tuner is a Pioneer TX-7800 and the digital tuner is a Kenwood KT58
I know the Pioneer dates from around 1979 or so.. I'm not sure about the Kenwood. I can't find any info on it.. but I'm guessing mid 80's or so.
Basically I hooked up both of them using the same signal cable 2's to my pre amp.
and I tuned both tuners to the same stations and switched between both tuners back and forth.
The Kenwood KT-58 beat the analog Pioneer for clairity without any problems. I was disappointed in the Pioneer TX-7800 as my other Pioneer is such a good tuner. My other Pioneer tuner is a TX-9500II.. and is still my reference tuner that I haven't found any used tuners I have owned that sound better than that one. I guess not all tuners by the same company sound the same at all.