I also throw two handed and have pretty much all the balls mentioned. I haven't really been able to use my Brutal Nightmare too much throwing two handed. I've been battling some shoulder problems, so my speed is down a bit.
With the heat being on in the alleys and helping to create more friction (and sooner), I've had issues trying to keep all of my balls right (right lane especially). The Diva has been a good, mostly controllable ball for getting deep. Just make sure you swing it out far enough because it's stronger than a lot of people realize. It is a step down from the Brutal Nightmare, but may not be enough of a step down for what you are looking for.
I'd probably go with the Misfit Pearl or Too Reckless. My MP is drilled Rico, so I haven't been able to use it as a step down piece on most conditions. The ball breaks hard (and earlier thanks to the rico). However, if you can get it down the lane far enough and out wide, it is a beast. I think if you drill it differently than I did, it may be an option.
I just got a Too Reckless last week and had it drilled a bit weaker. It definitely gets down the lane more than my other balls and still has good recovery. Might be your best option. For me, I still need something for late in the set - for now anyway. I'm probably going to go with a pin axis drilling on my next ball. Just trying to figure out what ball to put it on.
