Can anyone explain why there are SO many choices of drip tips? I've read a bunch of threads on it but no one really explains why one is better than any other. I've heard super T manufactoring has the best but WHY? Is there an actual different in the way the juice is dripped or how it vapes with different drip tips? Is there any heat sink to cool the atomizer with the metal ones? Is there anything other than feel in your mouth that is different with drip tips?