I have several tube amps. The problem today is finding good tubes. I have a good matched set in my Ampeg bass head but it took buying a few extra to get a good set of pre-amp tubes.
Personally speaking, todays tube amps are far better than the old ones and I would never consider a restore on one of those old ones.
The Mesa Boogie Subway rocket for guitar and the Ampeg SVT for bass is all anyone could ask for in tube amps and you can buy them new today.
No man has a good enough memory to be a successful liar. Abraham Lincoln
2016 36FBTS Pinnacle
2016 F350, 6.7, 4x4, DRW, long bed
B & W Companion 5th wheel Hitch