I like Telefunkens, but, I never considered them to be tonally rich sounding tubes. The ones I heard were very lively and dynamic sounding, but, considerably leaner than the likes of Mullard and Amperex. The Telefunkens that I ended up using in my phono stage are ECC803S tubes that are very expensive. They came in their original box, This was quite a while ago when there were some concerns about fakes, but, the Chinese had not yet perfected the fake diamond molded into the bottom of the tube. The box looked suspiciously clean and new, but the ends crumbled when I opened them, which indicated that t boxes were very old.
For warmer sound, I like Amerex Bugle Boy 12AX7s.