I'm a 15-22 off skier. I didn't read the other comments yet but I will give my thoughts. What are you looking for different in the newer boat - is it Zero Off? Have you tried Z Box? I have Z Box on my 2003 Sunsetter LXi and my ski partner has it in his 2005 Response LXI. PP 9.3 and Z Box works well. I think both of these boats are great at 15 off and typical at 22 off. After skiing most boats that exist I think your response is 90% as good as any of them at those lengths.
At our ski lake we have most of the boats you mentioned. I feel like the 1st Gen 200 is my favorite boat to ski behind but it is a close toss up to the 2014-2020 hull Mastercraft's that are also there. We have a newer Prostar and I don't feel that it skis as well as the 14-20 hull but we might just have a 1 off there.
i would rate them in this order
1-Nautique 200 2010-2018, Nautique 196 TSC2/TSC3 with zero off
2-Prostar 2014-2020
3-Prostar 2021+
have not skied Nautique 200 2019+ hull, have not skied the new TXi