As I mentioned in an earlier post I had a Rogue Cronus Magnum a number of years back, never had an issue with it. Sold it only because I wasn’t a fan of the sound of KT 90 tubes , solid state sounding to my ears. I presently have 3 integrated tube amps: an Ayon Audio Spirit 2 originally in my main system now in my 2nd system, zero issues with that for more than 12 years or so; a Line Magnetic 518IA in my main system , zero issues for 7 years; a Finale Audio 7189 MK2 also in my main system, zero issues for 5 1/2 years. Aside from those I have a Modwright Audio Elysee tube DAC in my 2nd system (previously in my main system) , as well as, a Modwright Audio LS100 tube preamp in my main system (hooked to the Modwright SS power amp in my main system). Both of the Modwrights have been trouble free for going on 9 years. Point of all of this is tube equipment isn’t necessarily any more prone to problems than solid state gear. Knowing that the power tubes have less expected life than the preamp tubes or rectifier tubes I change them out when they are nearing that point. The 2 integrated amps that are manual bias I check the bias once a month, and if I find a tube or tubes falling out of bias repeatedly on the high side beyond an acceptable level I replace them. You didn’t note anywhere in your posts the age of the tubes, nor your bias routine and how that measures up to Rogue’s instructions so hard to know if you possibly contributed to your problem or not. That said, given your angst about tubes maybe take some time researching solid state amps that meets your SQ goals coupled with a good reputation of reliability and sit back and enjoy the music instead of fretting over whether or not a tube is going to send your amp repeatedly back to the manufacturer.