It has more fiber material for the wet juice to cling to, so the juice climbs faster and the wick stays wetter for chain vapers. My 400 wick is perfect for my stye of vaping, (draw every 2-5 minutes when at pc) and I never ever get a dry hit, but even so, I'm curious to try the #500. I wonder if mine will flood? If you experience any dry times, try the #500. (304 or 316 only, as those are foodgrade and corrosion free).
Overall? I would suggest sticking with what Jim at e-vape.gr sells!
I'm going to try to pick up a Gemini from Jim, when I can. It's a regular DID tank, with the smaller Mini DiD cap. Good reviews on it so far.
There's so many gennies out there!!! You'll be hard pressed to find a better vendor though, with all the parts ya need for their creation. It's crazy out there! Love the evolution, can't wait til more are available as easily as Jim's are. It would be fun to try them all.
::: anybody seen my lottery ticket?:::