We use NOX for all our rendering needs at work - it's fast! It has been very helpful to have such powerful tools available in one package without having to pay extra fees or rely on 3rd party software. I cannot think of anything that we dislike about this product other than perhaps not being able to adjust some parameters more precisely (eg., how much detail can be rendered before aliasing artifacts appear?). If you are looking for an accurate render engine with great performance capabilities, look no further because there aren't any better options out there right now. Having all my renders done via Blender/NOX so far. A huge time saver compared to rigging everything by hand.
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