Telefunken CCa in the Aune T1 sounds magnificent... Sounds like a Miniwatt E188CC with more linearity, yet emphasis on the treble... Very, very natural sounding without any obvious warmth, but more musical than a Siemens E88CC grey shield tube, in my opinion. I also picked up some Siemens grey shield CCa's, so I will compare them to the Tele CCa's.
The Tele sounds much more relaxed and effortless than the Philips tubes I've rolled, with the exception of the pinched waist tubes... They are in a different league. The Philips tubes don't sound as relaxed... they tend to warm everything up nicely, but with effort. This is what some people may describe as more "analog" sounding. Superb.
(For comparison sake, the Phillips Miniwatt tubes average around $90+ each, Pinched waist $150+ each if you can find them, and Telefunken CCa's $200 or more each).