I actually tend to run 28 more than anything else. The thing about it is, the thinner wire heats up much more quickly. The same length of 24 will give you a much lower ohm reading at the same length as 28ga, and with that more heat, and potentially more vapor in the long run, but you also need much more airflow and good wicking to make it happen, and it takes a noticeable amount of time for thick coils to heat up completely. If you're cloud chasing, competing, that sort of thing, it has it's place, but for a regular vape I find it's more comfortable to not wait on my coils and waste a lot of juice while they heat up. My cloud chasing RDA goes through about a ML of juice in 3-5 hits, I'm guessing only a third of that is actually projected from my face...