I agree with Czbbcl on the Genelex Gold Lion KT-77. I have a Music Reference RM-9 MKII. I started with Shuguang EL34 for about 6 years, then went to Shuguang KT88s for almost a decade and recently re-tubed with the Golden Lion KT-77. I always liked the EL34 midrange and treble, but when I went to the KT88s I was immediately seduced by the tighter bass and slam. I stayed with them, trying to convince myself that I liked the KT88s better. One of my KT88s recently shorted so I pulled the old and tired original Shuguang EL34s out and re-tubed. With the EL34s, I remembered what I was missing with the KT88s. Time to re-tube so I gave a call to RamLabs and after some discussion they recommended the Genelex Gold Lion KT-77, it has the magic of the EL34, with the tighter bass and slam of the KT88s. They were correct, in my system, the KT-77 is the best of both worlds. Caveat, my comparison is with Shuguang EL-34 and KT99, compared to Genelex KT77. I have not heard the Genelex Gold Lion EL-34 or KT88 in my system. Who knows, I might be equally blown away by those