I've made acceptable 8 x 10 prints from colour negatives using both Ilford MG III and IV as well as Agfa MCC. Because of the base fog of the colour negative it is necessary to use a harder grade 3.5 or 4 to build any contrast, in my experience. I also had some rather grainy results which I think were caused by the brand of colour film used, unfourtunately it is so long ago that I can't remember which film I did use.