It's Bouquet with Me is the least wild of these four; it's a mix of pink, warm lilac, and silver with a scattering of holo. Rockstar Pink and Wicked Glitter share a more contrasting color scheme; both have blue, red, warm purple, and gold. Mad as a Hatter appears to have a little bit of everything in it&mdash: at least two shades of blue, plus silver, orange, gold, green, red, and purple.
Once I had these on my nails (three coats of each, no base or top coat), I was evidently too distracted by all the shiny to focus my camera properly; I apologize for the blurry bits in the following photos.
None of these are dupes, though Rockstar Pink and Wicked Glitter are close enough that it's certainly debatable if one person needs both. Rockstar Pink has a mix of glitter sizes, goes on denser, and leans more toward red/purple than Wicked Glitter, which is a bit chunkier.
There's been some talk that Wicked Glitter is supposed to be Sally Beauty's version of Mad as a Hatter, but it's no dupe. They're both similarly chunky, but MaaH is much cooler in tone compared to Wicked Glitter and has a more complex mix of colors.
If I had to get rid of one of them, it would be Wicked Glitter; not because it's not pretty and sparkly but because it's too similar to Rockstar Pink, and I like that better. If I had to get rid of two, It's Bouquet with Me would also go, despite it having two of my favorite things, purple and holo. It just looks a little flat to me, so I want to try layering it, as that often makes all the difference.