what did you switch your tubes out to again? (power and pre) and what difference did you get?
I first put some JJ EC83 S pre's and a ECC81. I go back and forth with Electro-Harmonix 12AX7-EH and have them in now.
For power tubes I started with TAD 6L6GC-STR and tried some Winged "C" (SED) 6L6GC that a friend lent me.
I really liked the Winged "C"s but I am happy with my TAD's.
With this being a 100 watt head tube break up is much more noticeable. How and when the tube breaks up makes a lot of difference in your over all tone. Cleaner mids and highs come through better with some tubes too. The Winged "C"s stayed the cleanest and broke up the nicest of the tubes I have heard.
It is very hard to give a definitive definition of different tubes. I have found that the way your speakers react to the break up is a big part of it. With what I have it sounds totally different through my 3015's then it does through my Peavey BW's and a GK 210.
This is why any sound clips you may hear means nothing unless the person making the clip plays the same way you do, has the same bass and the same cab. The way your speaker reproduces the tube break up is as big a part of it as the tube itself.