Well I went back to the OP and viewed that slideshow on this baby, and I am sold. That is the best driptip I've ever seen on ANY tank, I hate metal tips. And I don't think I will have too hard a time with the thumbscrews, if I make sure to trim my nails -- which I've found is necessary for a lot of the small bits I have to deal with, with all these things. But, my tool-happy husband really has got an enormous box full of every kind, size, and type of screw you can imagine, so I might be able to find 2 matching phillips that could replace the thumbscrews, if I find them troublesome. Or, he might be able to make a slot in the top of those thumbscrews so a regular screwdriver could be used; he loves to play with his portable drill, and has about every kind of drillbit known to man. When we needed to run a coax cable thru a wall, he says, "no problem, I can do it with THIS," and shows me this astonishing drillbit about as thick as my thumb.
Anyway... all that in a tank, for $8 less than the price of the Tobeco KFL+ I like best (Ironvapin, on eBay). And the other half has a 12-day-pay-period check coming up...

If I can finally lay these stupid cigarettes back down, maybe he'd buy me the rsbt to thank me -- he hates the smell of cigarettes!
Andria