Out of those two I would pick the BPS. I personally do not like the way the Nova feels in my hand. Side by side comparison of the two makes the Nova seem like a toy. When it is all said and done though, what is most important is that the gun fits you so whichever fits you the best is the one you should go for.
Sporting the Ambusher Layout and the Sprigtail Pirogue by Core Sound Layout Boats. "By the time they see you, it's too late."