Well, speakinng from experience, the conversational is often useless when you need to work from a complicated solid file or have anything more than a simple 2d drawing.
I can completely understand wanting to run G-code.
Allibre CAM in my opininion is the most functional for the money. I use edgecam when i need an awesome toolpath or more complication. I can get usable code from allibre in about 3 to 4 minutes for my anilam machines which is way faster than conversational.