But I'm on to new stuff as well, if the price is right. Sometimes yes, sometimes no, it works.
On a flyer, I acquired four of Jim McShane's new Gold Lion (Genalex) GZ-34s. These are beefy bastards,will survive a toss through the front window (as does a GL KT-88) and even by new Russkie standards, not cheap at $40 a pop but a bargain for sure. Pulled the antique Mullards and I swear, these are better rectifiers. The Gold Lions pulled out a little bit of bass even the Mullards could not produce. Much faster recovery, and the filament demands won't queer your M-125-type amp.
At any rate, your bargain for the day, should you require a decent GZ34 or 5AR4, is the GL GZ-34 from McShane. I don't work for him, nor does he for me. I just got a good deal, and my antique Mullards are relegated to the spares pile.