Just an opinion, but if you've never had Convo Pros before be ready to devote LOTS of time to polishing and upkeep. The design is cool to look at but a total PITA to keep up. Not even a Mother's Power Ball or small chick fingers successfully get in all those crevices.
Thanks Leanna, I appreciate the info!. Fortunately they are for my buddy so he can endure the torture of cleaning them, I like them but they are not my cup of tea. Oh, and I love the "chick fingers" comment, that's awesome!, he's really screwed!.