Sorry if I'm annoying... But is a roto grip - wreck em good? My local pro shop has it
It is perfectly alright to ask questions. The more infirmation you have, the better choices you can make.
I, too, would reccommend something more than the 8-9 lb ball. I know it us your first "good" ball, but if it is drilled correctly, you should be able to handle a 12-14 lb ball pretty easily. If you feel comfortable with a lighter weight, go with an 11-12 lb ball to start with.
I also would not recommend you go with the Storm ball you linked to. That is a very low hook potential ball. I would go with something at least one step above that.
The Rotogrip Wreckem is yes, a pretty good, pretty strong, reasonably priced ball that would probably serve you well for quite some time.