since you have a dimension i would pass on  the NVD. they are both very strong balls. if you want to replace your BWS and want to with ebonite, id go with the gamebreaker or pin slasher but i dont know much about the pinslsher. or if it is even remotely close to the BWS. i heard its supposed to be close to the V2 power. but if you just want to replace the BWS i would suggest th earch rival as the best option.
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HG:300x2(SR300 both)289(sawblade)280(SR300)
HS:792(SR300)778(SR300)778(SR300/Dr.Jekyll)
bowling for 14years
18 years old
2004 NYSPHSAA team champions
2007 NYSPHSAA individual high game(300) and series(1411-6 games)
current arsenal:
rival, arch rival, dead flush,scout,
blue vibe
SR300, RXS300 maxim
on the way maybe.....the sauce, momentum swing,resurgence, or demension.
p.s. go leftys

Well i was really impressed with NVD and thought i get this one with a pin down drill...My Dimension is drilled pin up and i think its 5 X 3 and it has a nice reaction.. I got it from a friend for 50 bucks and it has less than 20 games on it. Im not really trying to replace the BW because it still rolls very well but only on dry conditions.  I really just want this ball and alternate the Dimension and NVD from time to time...

I have the NVD and I have rolled my friends Dimension and I'd take my NVD anyday over his Dimension. My NVD had more movement at the breakpoint and read the midlane about the same. Just my $.02, Bruce
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"Train a child up in the way he should go and when he is old he will "BOWL TO WIN" and not turn from it."