How would you compare the Hellion to the Ultra? That and a Larry (and not trying to turn this into the typical circus that may inspire) are about all that is left on my list at this stage. Maybe a Steavens as I still remember reading the original harmony central amp reviews of the poundcake when I bought my first Rivera knucklehead in like 1996
I will likely convert my ultra to el34s or 6550s when the time comes as I also have a much greater stock there. Granted, I have more flexibility in some of my Hermanssons so may play around a bit more with the big bottles. My Herm PA is currently loaded with 6 el34s