I plan on using my loyalty totem to get a miracle potion, but Id like the get "the most bang for my buck".

I know Angelic is up there, but Im not sure if there is one that is more rare/expensive? Storm is fairly new, is it considered harder to get?

Angelic is still the most expensive Potion, Storm only goes for about 4mil sP in user shops so using a Potion Totem to get a Storm Pet might not be the best option.

For some reason I hadn't realized that storm was even a potion haha. I thought you had to get the color from a random event. So thank you, because I really almost used it on that w

yep, angelic is by far the most expensive (currently 43mil), because unlike most other potions, it has an official price: 750 CSC - although it is currently half price for the black friday sale. because the sp value of CSC is always increasing, it will probably always be the most expensive potion. so if you're going to use your loyalty reward on a color, angelic is the best bang for your buck.

Moneywise, it's angelic.

Patiencewise, it's steamworks, because of the three day wait.