That Howard Dumble anecdote is great!
I love stories like that. They become part of an interesting musical folklore, like the way Molly Meldrum was "discovered" while half-drunk going to buy another bottle of scotch, or the way the song, "I've been everywhere Man" was discovered in a strip joint in King's Cross. Just the right place at the right time.
I definitely would choose the Boutique Clean over the Rectifier option if I had to choose one or the other.