First, i would say the TNV is a VERY high maintenance ball. Mine picks up knicks & gets VERY nasty looking after just a few games, & it definately needs cleaned after every set.
As for the differences. I would say if drilled the same, & both left OOB, the TNV will go much longer & be much more angular. Most of the BWs ive seen are very smooth rolling & hit like a truck, the TNV is really angular, lots of length, lots of backend, hits like a truck carrying a truck.
So yes, if u want to try a TNV, go for it, its not going to do the same thing as a BW unless u have a BW drilled really strong & REALLY highly polished.
Shawn