Just want to say here that, Cherry (Menthol Eucalyptus) Cough Drop, passed my 'test' as far as not clogging up addies.
I use Cisco 306 open bridge addies (1.8 ohm), and they cost around $9 each, as compared to cartomizers that go for 5 for $8.50.
With the cartomizers, I go with one 6 ml bottle per cartomizer. If the cartomizer gets clogged up I just unclog it by ramming a paper clip up through it (these are Boge 306 cartos).
So, if an EJ is only getting through one 6 ml bottle on an atomizer before clogging up the atomizer, that is an extra $9 per 6 ml bottle which is essentially prohibitive from a cost perspective (the cartos come out to $1.70 per 6 ml bottle). If the ej can get through 2 6 ml bottles, then it is $4.50 per 6 ml bottle, and getting through 3 makes it $3 per 6 ml bottle. If it can make it through five 6 ml bottles before clogging then you break even, and if it can do better than that dripping on addies is in fact cheaper than using cartos.
With the CCD I just made it through my third 6 ml bottle and the addy is still going strong. So, good enough for me. CCD is fine for dripping on addies.
I should say here that... I would expect... Black Licorice, Bluberry Cheescake, Caramel Popcorn, and other TV EJ that I have, to also be reasonable to good dripping on addies. But, as far as Cafe Mocha, Tobacco Menthol, and Cherry Cola, uh, might not make it through one 6 ml bottle before clogging. Yeah, the darker ej as well as TM made from real tobacco, are gonna clog and therefore need to be used on cartos (unless you have an amazing way to clean cartos).
Oh, I am going at 10% VG. Higher VG tends to clog more, or so they say.