I've got
this bad boy coming in the mail tomorrow. It's a slightly less expensive variant of the Kayfun/Russian--I say that because they all use a vacuum feeding strategy to get juice to the coil housing. It has a pyrex tank and this newest version has it protected because previous versions broke easily.
Anyway, from what I've heard, if you have the funds I'd go for a Kayfun/Russian and try to find a piece of glass to fit it, I'm sure they're out there. If not I believe they have solid steel sections to use for more corrosive juices. But you should definitely pick up a dripper as well; I'd go with an Igo-W/W4 or Igo-L, I went with the W4, but again, if money is not an issue there's lots of fancy ones with air flow control and whatnot. Building one or two setups on these drippers will help you get a feel for building coils, then you can focus the vacuum feeding and wick for you tank setup. Drippers are nice around the house anyway, you aren't committed to one flavor, less chance of leakage, etc.
But I'll follow up on my Fogger, I'm pretty excited. It will be my first tank RBA!