Welcome
@barkra123
Well I have somewhat the same situation as you, altough I played and enjoyed the "old" New Horizons a lot. But I never came along with the very dusty and old melee combat system. And I really cant play with that anymore. So I swapped to the Maelstorm 2.8 engine - port of NH, because the 2.8 engine offers a much more advanced melee combat system.
The latest ported Maelstorm version is BETA 4 WIP 31 from March 2016. It is - if you download it just and leave it - very stable and I'd say more stable than the original New Horizons, especially on more advanced PC systems and 64 bit systems.
To Each his Own is a complete different game and has nothing to do with New Horzizons or Maelstorm, and I tried it for about 2 hours and then got a refund because... nah, just nah
the Maelstorm porting of New Horizons has some limitations and bugs that came along with the porting, but I will try my best to find those bugs and (with help) sort them out. And add all the awesome stuff the new engine offers (Ship lightning e.g.)
So in conclusion for your question:
Keep in mind, that you can't use all the awesome features the guys here scripted for New Horzions, and it probably takes a long time, until the newer stuff gets ported correctly to Maelstorm
Some functions like the advanced combat system only work partically, which means that you need to accept graphical bugs etc.
So if you dont have a high end PC with a CPU that otherwise wouldn't get along with Storm 2.0, stay with the original New Horizons
If you have a "high-end" system with a 64bit architecture, you will most probably be better of with the Maelstorm engine, since it got an upgrade for 64-bit-addressing, which is very much noticable, both for stability and performance
-> if you already have an original copy of PotC, I'd question myself twice if you want to spend the extra 12$ for the Maelstorm, but I did (cheap dollar-course, I got it for 10 €, which is 1/3 of the current pricing for TEHO) and I didnt regret it so far..
BUT: I dont just play that game, I also enjoy modding and editing the files