Thanks for the compliment!
For this particular set, I used Photoshop CC as they reset the trial for me so I took advantage of it. Normally I use CS2, though. (I find CC to be a lot easier to a) look at and b) use than CS2). I also used some C4Ds I scrounged up from an old prebuilt that had died. I'm using its hard drive in my own PC now.