Ric--
I haven't tried any of the three you mentioned, so I'll be interested in any comments people have about them as well.
The best I can think of is Renew-It. It takes a little more work to get a good cleaning out of Renew-It than it does with Hook-It, but Renew-It keeps the shine on a surface. Repeated uses of Renew-It will actually get you to about a 2500 surface eventually, even without the use of other polishes. It just takes longer. If you have a ball with a 2500 surface, it should look about the same after using Renew-It on it. If the ball has a 3500 surface, Renew-It may dull it a bit, I'm not sure. I have a ball with a 3500 surface, and one with a 5000 surface, but they see little use, so I haven't got the extensive experience fiddling around with those surfaces like I do with stuff in the 800-2500 range.
Shiv
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