James.
Thanks for that tip.
I watched a few free vids and then I decided that right now my cheapest foray in was to outright buy the vid on reverb (the one where Fab showed Office, Plate and Hall on that Jazz piece). Really opened my mind, now I just need to find which of my plugs will accomplish the best "Office" as I'm pretty sure I have the plates and halls covered.
Of course there is no one size fits all and so the lesson is the technique not the "formula" of the plugs he used.