To my limited knowledge, private citizens in Florida can carry up to 3 fl oz containers of Mace or OC spray.
I plan to buy some Zarc Vexor brand OC(micro-spin format). It's very potent & comes in Mk III & Mk IV sizes.
The new Sabre Green brand looks impressive. It's like Sabre Red but uses the hot Wasabi formula. The firm PR & ads state it cleans up faster than other OC sprays.
I'm using a Mk III size Sabre Red Crossfire(allows rapid deployment from any angle).
Id avoid the foam or goo type OC systems. Many aggressive subjects just fling it back at your face or rub it on you.
Be aware that violent or career criminals either have been sprayed a few times or tasered. They won't be intimidated or concerned about a small blast of OC spray. Be fully ready to deal with the threat if the pepper spray fails.
CF