Yah : I tried the Winged "C" EL34 cryo'd quad ( Thor Monos ) and did not care for them at all..At first I thought they were decent but noticed I was missing detail...Quite a bit warmer than the un cryo'd quad..If you need more " Color" they might work but from what I heard its double the cost for nothing..........Some other may disagree but I will stick with stock Winged "C"