Matt,
The Nail series is the replacement for the Doom ball, but I would recommend the Spike instead of the Absolut due to what you are looking for. The Absolut is much stronger overall than the Nail/Doom core is and the Spike actually gets down the lane with ease like the Doom (High RG / High Diff) and offers a nice backend motion that you might be looking for. I see the Spike about 3-4 boards stronger overall than the Titanium Nail.
If you want a stronger rolling piece, then I would recommend the Absolut which will handle a little more oil (medium-medium/heavy patterns) than the Spike and offers a big backend motion too. Both new pieces are great compliments to each other & will be a great fit in your arsenal.
Hope this helps...
