What cab are you using?
I have been using a 1x12 Dr Z convertible cabinet with a Celestion Alnico Cream speaker in it on stage. For my direct signal I've been using one of the Celestion Alnico Blue factory IRs. Can't remember which one.
I think my direct tone sounds pretty good, but after comparing my direct tone to my real cabinet side by side yesterday I'm thinking I might need to shoot some of my own IRs of my cabinet or experiment with other factory or commercial IRs to get a more similar sounding tone.