Just how good is it?  And how hard is it to get it back to factory finish once it has tracked out some?

  Been wanting a strong control type ball.  I like my ebonite gamebreaker, but a guy here has the momentum and it has gotten my attention.

  His momentum looks like it is pretty strong, but not jumpy at all, very much like the gamebreaker with a stronger backend.
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What did you expect, something PROFOUND?

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I have a momentum and a gamebreaker, and as long as you keep your momentum polished they are a very very good compliment to one another. I love both of them.

I picked up a used Momentum,looking for a good oil ball and man is that ball unpredictable.One time I throw it up the outside and it doesn't come up so I try to swing it just a little and the ball goes beserk.It is very hard to read.It is sanded to 4000 ab with no polish.I thought it would either hook a whole lot more so I could open the lanes up.The way it acts now I don't have any idea when to throw it or where.

Anyone else have  trouble on fresh lane condition and clean backends? As soon as it hit the break point area on the lane it was gone way left and sharp hook.But i guess any ball would hook like crazy on a clean backend.

Yes, after a few games with it, I definitely had some nasty over/under with this ball in the OOB condition where if you get it right early it goes brooklyn and if you play too tight, it doesn't make the corner leaving 2-8-10s, buckets, etc. The surface responds to surface changes rather well, I changed the surface to 2000 abralon + Magic Shine polish which improved the reaction because it bleeds energy a little sooner which softens the backend reaction a bit.  But I agree with tenpin477, this ball is designed to be polished and to be a ball for the "great wall of china" shots out there where you send it right and watch it come back.  If you want a ball that starts up sooner and has more continuation, get a Resurgence.