Cinnamon's, menthol's, some fruits don't play well with others. To sample juices, I'd recommend a standard atty,510/306/901 and a drip tip. A few drops will give you 4-5 good hits to test. Then if its a no go, you can give it a quick rinse under some warm water, or just move onto next flavor. The Ego- T's atties arent so easy to clean, as far as we know. Because the components are somewhat hidden under the spike, they will take longer to dry, and be more hassle. Cozzicon and others have done you tube videos on this. Some flavors are tolerable to intermingle a bit as you cycle the flavor out, and some ppl come up with great creations by mistake doing this. But, on the flip side you can turn 2 ok juices into an atty full of puke
juice also.
Ego-T atty is best for designated, approved flavors, as tanks are 1ml+ as well, and a hassle to empty back into your bottle.
Hope this all helps
