I currently have a RG haywire, a storm sky rocket, motiv forza  redline and a motiv graffiti tag. I'm looking to replace the forza redline with another storm or roto ball.  What would be a good choice?

Why do you want to replace the Motiv Redline.  On October 17th you stated you could not be happier with the Redline.  Said you were glad you made the choice.
I'm asking because I just drilled up a Redline and I can't put it down.  It's a awesome ball.
Why was your love affair with the Redline so short?  What changed from your October post? 

That's the first I have heard that a Redline died, especially in one month of use.  Did you have your PSO check it for oil?  Perhaps a de-oil and a resurface will bring the ball back to life.  You may want to do this before investing in another new ball.
Hope everything works out for you.
I wish I could recommend a RG/Storm ball for you, but I'm not into RG/Storm equipment.  I'm sure there are many RG/Storm lovers who can help you out here.

I would look at the Critical or a Devour