I couldn't disagree more with the Lucid. Seen it thrown around my area and it looks to be basically the Storm version of the Critical Theory. Why when you have an Anarchy, Nano Pearl, and a Marvel Pearl would you focus on another low RG pearl?
If you want to stay with Storm / Roto and you want another high end, low RG ball you really should look at Vivid, Nano, Defiant, IQ, and maybe the Modern Marvel.
Of these, the roll shape is the differentiator. The IQ will allow you to square up the most and the Defiant is probably the most angular. The Vivid and Nano are in between those. The Modern Marvel is a great medium-heavy arch ball but it will glide drier heads better than the heavy oil balls.
Since none of us have you seen you throw the ball we have to go with your description. If someone came into my shop with the description you have given and they were looking for a heavy oil ball I'd recommend a Vivid. It will be very stable in heavy oil and give you a smooth transition at the breakpoint.