Thank you for the detailed response but I've seen many Maya tutorials for modelling with Nurbs in Maya however they're converted to polygons after, like some of the training by SimplyMaya but after reading what you have had to say, I feel like I should just stick to my polygon modelling.

I've recently seen a friend plough through modelling some decent models by using Nurbs to base it out and then going from there... It was one of my main reasons for looking into it and finding this video series by Simply Maya but I wanted to get some feedback before purchasing, if I end up purchasing.