I track my tube hours and am into the final 1/3 lifespan (not necessarily technical lifespan, just what I am comfortable with) for my power amp. I have a few bucks squirreled away for audio but unable to add to the stash in the future, so am at a tipping point ... will I spend a good chunk of my remaining $ for new tubes or go SS instead? This is likely my final opportunity to switch from tubes to SS so am curious. Speakers are Pure Audio Project Trio15 Horn1, amp is 2A3 tubes, preamp is a hybrid (12AU7s).