I go with 12mg/ml for my highest nic - I take stimulants and drink coffee, I don't think I need anything higher than that!

I also buy some in 6 and some in 0, esp for late night chain vaping.
From Halo's catalog I have gone through Malibu, Mystic, SubZero, Tiki Juice, Feeedom Juice, Tribeca, Prime 15, Belgian Cocoa, Kringle's Curse and Twisted Java! (In addition to reordering some faves have Shamrock and HX3 on the way lol!)
In the ones I have tried, not one have I disliked. The Freedom juice I vaped upon arrival and it was the first time I encountered the "perfume" flavor but it still didn't stop me from vaping the ml in my mini-tank!

Tribeca is my #1 fave... the one I wish I had a 30 ml bottle in all three strengths I vape. But honestly I could have a 30 ml bottle in every flavor I've tried so far and have no problem vaping them empty.
I have no other reasons to love Halo besides the facts I have been extremely happy with the hardware, I absolutely love each flavor I've tried (and I have no problem ever being honest about what I like), and their customer service has been wonderful. I knew nothing about the company when I first ordered from them. I was as close to ordering a kit from blu but honestly I went with Halo because I liked they had a pink battery!

I fully expected to have tried multiple vendors for liquids and even hardware but I've just been too content to bother.
I promise I will quickly express anything critical if I have a negative experience but with Halo it just hasn't happened yet!