Interesting, I had the opposite problem you're having I was actually allergic to VG based Juices, simply because VG Based Juices can come from a variety of sources and I think one of them is animal byproduct which really surprised me in the beginning because I've only read about people being allergic to PG Juices. Symptoms include ulcer like feeling on the area where you stick you mouth piece at around your lips and a very uncomfortable scratchy throat hit that makes you just not want to vape at all. For VG Juices if you want to try out a tankomizer would probably be good to order 3 hole pre-punched cartomizers for your tank, and you shouldn't have a problem with it unless of course you vaporize 1-1.5ml of liquid faster than the juice can feed into those holes but that's highly doubtful lol. But to end my note I didnt really like VG Based Juices as there was just 0 throat hit for me, I've even tried a 30PG/70VG blend and that was 0 throat hit and I'm vaping at 18mg. I'm not sure if there're various sources to PG but if you're having juice issues it might be that you're allergic to a certain type of PG, but I've not really done any research into that because I haven't had any issues now vaping at 70PG/30VG. Also to note flavors will be muted with VG Juices, they don't carry flavors very well and throat hit just wasn't present for me at all. Might I suggest that you buy just small amounts from various vendors and test them out instead of buying a whole lot at a time, that way you can identify which sources would be most suited for you. But I guess all vapers do go through this, it takes a while to find the juice you want as an all day vape, and God knows I have tons of juices that I didn't like just laying around on my shelf lol.