Same here. I got to pick two flavors. Looking to compare Halo's menthol's to what I currently use (Smokeless Image's Ice Menthol), I ordered their Ice Menthol and their new menthol offering, Mystic.
They actually came in the mail today. The Ice Menthol is 30ml and the Mystic in a 7ml bottle. I tried the Mystic in a new Vivi-type tank I had. Vaped it at different voltages from 3.4v to 4.8v on a 2 ohm head on my Provari.
Initial impressions are....meh

An instruction card, probably sent with all their juices, recommended that their
juice be allowed to steep 24 hours after first opening the cap. I'll keep going back to it. I'll try the Ice Menthol when I get another chunk of free time. Hopefully it will make a better impression.
Sorry, Halo. But thanks for the free
juice. I really do appreciate.