I am really a Brunswick guy at the moment, but if worse came to worse and I wanted to buy a spare or another one to drill now, and couldn't find one, I would look at the IQ Tour. Right now I have to decide if I want to buy a spare or not. Notsohotshot said he might be able to get a Versa-Max if I want another.
I am wondering if DV8 has a ball similar to the Versq-Max.