Tammy,
We have used Corynebacterium vitaeruminis a bit. I believe we used PYCa system for plating. My recollection is that the original strain has a prophage in it, the Corynebacterium vitaeruminis CAG1 strain is cured of its prophage. Denise Monti has the most experience, so I would ask her. (montidenise2@gmail.com)
We have not obtained any NRRL Corynebacterium hosts, but they look like they have a few.
Good luck!
Keep us posted on how you proceed!
best,
debbie