Anything more than 30% PG starts to taste chemical to me. The vast majority of RTAs have leaking problems to some extent, and they are more finicky when compared to any and all of my RDAs. I own a whole bucket full of RDAs, all of them are authentic, and the vast majority are expensive high end. That said, I don't get leaking with any one of my four Reload Vapor USA Reload RTAs, at least not if I take a few drags within minutes after I refill. In my own personal experience, the Reload RTA and the Deathwish Modz Isolation RTA are still the only RTAs that, flavor wise, hold a candle against the best performing flavor chasing RDAs such as the Kennedy 25 with the Stub Dogg drip tip, for example. I don't mean to be crass or anything, but over the past 3 years I have spent way more than a few thousand Euros on atomizers so I believe that I know what I am talking about here. Leakshows are not for me. Low wattage vaping mutes flavor, as does going with simple round wire or parallel round wire builds, and, the more people who have never done a fair comparison between all this and high wattage vaping on various decent complex coil builds, the more flavor keeps on getting muted.