BlueMark, my I30 came in today. Have not tried it yet, any advice, or just go for it!
I found it works best just filling it it to just below the bottom wick, otherwise I start to get gurgling. I have a Pro tank and a Vision Vivi Nova and (to me) the 30 leaves both in the dust as far as throat hit, vapor production and flavor. I know that's contrary to what some others have said but that's my experience. I use the Pro tank for juices that harm plastic.