I don't have any Tung sols. The Ken rads are the most microphonic, ridiculous infact.
I did get a pair of MC rated Sylvanias from Andy, even they are a touch microphonic, I guess all tubes are to some degree.
The Syls sound a bit more neutral which some may interpret as less bass or sterile.
There seems to be a developing trend where short bottles, like GTA and GTB are less microphonic. Tall ones almost always are microphonic.
The best so far for my application are RCA 6SN7-GTA, richer sounding with virtually no microphonics.