What do you get in the Std vs Ultimate CS2 packs?

I'm finally looking at getting CS2 after always loving CS on my Mac. I have a couple of questions though:

1. I have an 32GB M1 Max MBP, so having to look at using my Parallels if I want to use it with any mods. What are the chances of getting a decent FPS in Parallels mode, even if I devote most of the resources towards it?
2. What is the difference between the standard £/$35 package, and the ultimate one? I've looked and looked, but nowhere really seems to offer a definitive list of what you can get with the ultimate, and what you strip out / avoid by just buying the standard plus the packs I actually want.

Hope I've got the flairs right this time...🙄