While the AP1/AP3 lines have been replaced with the T-100/T-200, these are not simply line extensions. The technology is vastly improved. Just with the T100 there is more tungsten weighting and is more forgiving than the 712 AP1. It is worth a fitting to compare the 2, and possibly the 620 CB, as it is now closer to the 712 design than the T-100. Then there are the improvements with the shafts just within the no upcharge models. Since it has been 8 years and likely something has changed in your body or swing, not a bad time for a full fitting evaluation.

I would say AP2 718, AP3, T200. The T100 too but you should know that’s a smaller blade and less offset.

Only recommendation. Go see a Titleist certified fitter/product specialist, try a number of the new irons and shafts. See what the numbers on trackman look like. Then make a decision. What I ALWAYS do when it is time for a new set. The new T series of irons are very good. The fitters are the professionals, we are not. With respect. Cheers.

Correct me if I'm wrong but the T100 is the AP2, the T200 the AP3 and the T300 the AP1 whilst the CB is a compact head and not very forgiving.

I used to play the 712 AP1 with KBS stiff shafts, I had to call NASA each time I hit the ball it launched so high! I had a fitting and went for the AP2 with NS Pro 130 x-stiff shafts, it still launches high but with a more controlled flight.

Personally I would go and get fitted at an official Titleist fitting centre and try all the shaft and head combos to get your game dialled in.