For practical shooting it is almost six of one and a half dozen of the other. Some folk swear by the 200 gn swc, some by the 230 gn rn or 225gn flatter nosed slug. I believe many target shooters use the 200 gn as it maybe more of a 'target' slug in that it is lighter and may be easier to shoot and it leaves a nice square hole in the target whereas the rn slug leaves a more ragged hole.
I have used both but prefer the 225/230 gn cast, depending on who makes it and what it looks like, for general overall 45 shooting. For field use I prefer the older heavier Keith swc (or modified Keith design as some might opine) in 238/240 gn originally designed for the 45 Auto Rim cartridge but either way, you can't go wrong with any of the two slugs you asked about.
Go buy a box of 500 of either of your choice, a pound of Unique and have at it. When you have shot up the first box, buy another box of different slugs, another lb or Unique and have at it. When you have finished with both boxes of bullets you will have had a lot of fun and may have figured out what your preference is, although you may have to buy more bullets and more powder to really refine your choices........ just tryin' to help.....