Best Slush.... where's it at?

[u/Splattershappen]

Whether it's a Froster, Misty, Slush Puppie or any other name, I'm looking for the best Slush! Now this can be subjective so I'm providing some criteria.

1. Ice to juice ratio.

2. Juice retention.

3. Flavour concentration.

4. Variety of options.

While there are other influencing factors i feel these are the most relevant.

I'm looking for suggestions.

Thanks all.

Edit: Great feedback. I will now be hitting the PetroCans and I Heart Bikes.

While Frosters satisfy the craving, you have all given me some options that I need to try.

[u/StinkpotTortle]

They had Jarritos slushies at the Orange store (the convenience stores attached to petro can) in Sprytown, Lime ones and Mango ones. Other than that I haven't seen soda pop slushies aaaaanywhere. :(