Thermoquad vs holley vs q-jets

I really love a well tune Thermoquad. Nothing really beats it on the street. Only trouble is, they have a learning curve. There used to be a Thermoquad tuning book you could find on ebay. It was a copy of the 1972 Thermoquad factory tuning manual. Better than anything out there. I don't see them on there now. I've had one twenty plus years. Very informative.