They're perfect ports with added save states, and there are way more of them. I don't see how these ports could be much better. And can you really have the "best-looking version" of anything on a 3DS screen?
These ports have often gone in and re-added 60 FPS to previously 30 FPS arcade games, such as Outrun (not in this compilation) and Galaxy Force II. They added a number of viewing modes, such as ones that expand the viewing field as opposed to simply upscaling. They've added a multitude of options to these games. In some cases, new music and modes (Outrun). And the story behind Fantasy Zone II, where they went back and rewrote the game as the System-16 title it always deserved to be, is pretty remarkable.
These are truly excellent
ports of the games by a team who truly loves classic arcade games. This isn't a simple emulation job.
And the 3DS resolution is more than adequate for these games, so yes, you can have the "best-looking version" of Galaxy Force II on a 3DS screen, in *3D*.