Greetings,well after many hours spent listening to music and the valves making it I've decided what's the best for me. I was hoping my findings may be of use to others too. I use a pure sound a30 and sl1210 with ortofon mc20 in sme 309. Also T10 step up with mission 700 speakers. These will do until i build my tannoys with 3134 drivers! So back to the point,I can say the best most balanced,detailed non fatiguing sound is made by Tesla e88cc and Tesla e83cc. Telefunken ecc83 good also but second place to the Tesla! This has probably been said already so apologies if so.