[Karloff70]

Think it probably depends on the size and complication level of the circuit as well.

I built a G7 valve mic on a pcb from the prodigy forum, but ahd lots of issues, and in the end decided to just rip it and start again on breadboard with mostly new components. Worked out great, kind of more satisfying, and also the end result feels more tidy somehow, as the space sharing with board and transformer inside the mic body I used could be maximised this way.

If it's a little circuit, I'd just do it.