I started with Wizard, but found Nude Nic "cleaner".
Now that I'm actively stocking up a bit, I just bought some from Heartland, and some from Nic River.
Hoping what was mentioned above about Nic River's "Pur Nic" isn't so...
But It'll be a while before I get to any of those new deliveries.
I DO recommend Nude Nicotine - I've had nothing but clear, slightly sweet, no pepper, from them.