I am very pleased with the Genelex 6922 & 12au7 that I am using in my Lamm LL2.1 Deluxe preamp. See this thread for a description of the sound:
http://audioaficionado.org/lamm/6087-tube-suggestions-ll2-1-deluxe.html
Dave
http://audioaficionado.org/lamm/6087-tube-suggestions-ll2-1-deluxe.html
Dave