Jake,
Strongest up front (early rolling, handle tons of oil) but smooth on the backend or something that will retain energy, turn harder on the back (as hard as a urethane could turn) but needs the dry to help out?
I ask as anyone who had an AMF Hype (the black one) will tell you that ball out of box was super strong and could handle tons of oil, but do NOT expect it to turn much on the backend because A) its dull B) its a urethane and C) it used its energy in the front part of the lane.
A Motiv Tank is a step down for me from my Hype. Doesn't handle as much oil in the front (weaker) but can move more on the back (stronger there).
Although not a true 100% urethane, the Blue Hammer remake would get down the lane better than the Tank and Hype for me and had much more energy retained for the backend, making it the strongest of the three on the end fo the lane, but the weakest up front and could handle the least amount of oil.
So...back to the same question that Rico and others have asked....WHERE do you want it to be strongest? If you want something to roll early and handle a flood...AMF Hype. If you want something to get down the lane and have some pop on the back, Blue Hammer.
Once you answer where you want it to be strong others could probably help you out more.