I have a number of options that are open to me and I would like to understand, without going through the auditioning hassles, what effect each of the following changes will make to my system.

Option 1: LP12/Armageddon/Ittok/Lydian --> LP12/Armageddon/Ittok/Lydian/Prefix/Hicap

Option 2: LP12/Armageddon/Ittok/Lydian --> LP12/Armageddon/Aro/Lydian

Option 3: NAC82K/Hicap x 2 --> NAC82K/Supercap

Option 4: NAP250 --> NAP135 x 2

I know source first principles point to Option 1 or 2, but I also have a CD2 that I don't intend to change for a while. How would you rank these options in terms of maximum bang for similar buck?

James