I have a Super Ring and I used it but for some reason (which I can't remember) I quit using it. I think it was because you had to snap it together after you sprued everything up. You couldn't slide it down from the top like we do with the Ivoclar rings. It was something you definitely had to be careful about.
If I can get the results others have using the Ivoclar ring with multiple units I prefer that route. I think I will give Zero Zero's technique a shot using the 8 ga. sprue for spacing.