[thxbb12]

IMO, the best would be to use a converter that's manufacturers' agnostic so you can use it regardless of your camera brand.
Although you don't wish to convert to DNG, it sounds like a descent compromise for the time being, until your particular camera format is supported.
To avoid any vendor/software lock-in, Rawtherapee is a great choice that will probably last for a while.
Adobe provides a free raw converter to DNG.