While polygons seem much more flexible over NURBS so far, it seems that NURBS can quickly loft geometry together which is why I think I've seen many techniques for speed modeling utilize NURBS.

Thanks a lot Genny for your help. That feature for actual smoothing is very good to be aware of as I thought I was going to have to essentially remodel some parts of my jet just so I can have specific areas sharpened up (pretty sure these are what sub-div geometry is good for).