Just 2 cents from another person who is sensitive to metallic taste; I can't use std atties or anodized drip tips
without it tasting like I am sucking on a penny.
I use SS drip tips with no discernible effect on taste, and once I switched to glass tanks, I went with SS caps
and can not tell any difference in taste between my tanks and a regular cartomizer.
As far as aluminum goes, raw aluminum is a no no because of oxidizing and leeching. The general
consensus is that anodizing makes it safe, but since I still get a metallic taste from anodized drip tips,
I am leery of this and I'll stick with SS or delrin.
( though, to be fair, it was a cheap drip tip and the anodizing did not have that hard glossy look of other
anodizing I have seen )
IBTanked has a nice simple XL tank with SS caps for less than $30, and the caps come with a rubber gasket
to go between the steel and the glass. This should give them a little more shock protection, though I have
yet to drop a tank, so I don't know for sure.
Now all we have to worry about is the rubber in the o-rings. I had to replace the o-ring on one of my cheaper
SS drip tips because I noticed it was getting soft after using one of my stronger juices.
