Roto-Grip balls, even the weakest, are all much stronger in overall hook and oil handling; so they're out, in my point of view.
You're safest bet is either a Tropical Breeze pearl or the Hybrid. The Ascent is closer overall to the TB Hybrid, but the hybrid is slightly earlier, but an excellent overall ball. The Ascent might have a small advantage in length.
Personally I think the Brunswick Strike King is THE closest match up to the old Ascent of all the balls currently made.