Hey all.  I am in the market for a new piece to open up the lanes with on a 40' THS on Brunswick Anvilanes.  I have a Mutant Cell which was awesome for me but it seems to be dying rather quickly.  I have taken very good care of it and it has around 150 games on it but just has nothing left on the backend.  So I'm looking for something I can open the lanes up with, I also have our local Masters tourney coming up next week and I want something I can stick with for a while before having to ball down.  I have a C 4.5 but on our house shot there is no way I can keep it on the right side of the head pin, by far the strongest ball I have ever thrown.  In my bag right now are a Mutant Cell (45x4-1/2x65), Mutant Cell Pearl (60x4-3/8x40), Roto Dark Star (65x4x40).  I have been thinking of grabbing a Nomad Solid (take it to 4000) or a Riot?  What are your opinions of these 2??  My specs: Rev rate 350-375, speed at pins ~17, PAP 5" over 5/8" up Righty, Avg 210.  

I am going to grab the Theory when it is released, but for now I need something to open up our house shot with.  Thanks for any input.