I love my Svetlana EL34s. They are very clean and airy. After several years of use, it's time to replace them and I'm going with another matched quad from thetubestore.com. Another plus is that they can handle a little more plate voltage and can pump out 25 watts per tube vs 20 in most EL34s as long as your amp has the gain and adequate power supply.
For ECC82s, try Golden Dragons from China. I like them a lot. They are not cheap but are very clean and don't miss a beat!
For ECC82s, try Golden Dragons from China. I like them a lot. They are not cheap but are very clean and don't miss a beat!