Honestly I have neither, yet. I was facing the same decision, and you may possibly find my point of view helpful. I have two Tatroe tanks on the way and they will be my bar/driving/school vapes even though the Kanger heads aren't the best. You, however, can rebuild them to your liking and they are fairly hassle free when using cotton. I just ordered the Atomic RDA for my at home/relaxing/tv vape for the times I just want awesome flavor and vapor. I'll keep my all day vapes in the Tatroe tanks and my rich flavors in the RDA. For me (a guy on the go), I feel like this is the perfect setup. Most of the time I'm either in the bar as a customer, in class, working on homework, working (bouncer at a bar), at a friends house, driving, or sleeping. I'm never in the same spot for too long, so the Tatroe tanks for me are better on the go than a Kayfun (slimmer, shorter, and guessing lighter). Just my set ups for my Provari Mini that suits my lifestyle. Hopefully I was able to help in some way.
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